735 lines
22 KiB
C++
735 lines
22 KiB
C++
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//=--------------------------------------------------------------------------=
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// CtlView.Cpp
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//=--------------------------------------------------------------------------=
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// Copyright 1995 Microsoft Corporation. All Rights Reserved.
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//
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// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
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// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
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// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
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// PARTICULAR PURPOSE.
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//=--------------------------------------------------------------------------=
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//
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// implementation of the IViewObjectEx interface, which is a moderately
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// non-trivial bunch of code.
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//
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#include "pch.h"
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#include "CtrlObj.H"
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// for ASSERT and FAIL
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//
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SZTHISFILE
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// local functions we're going to find useful
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//
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HDC _CreateOleDC(DVTARGETDEVICE *ptd);
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//=--------------------------------------------------------------------------=
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// COleControl::Draw [IViewObject2]
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//=--------------------------------------------------------------------------=
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// Draws a representation of an object onto the specified device context.
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//
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// Parameters:
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// DWORD - [in] draw aspect
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// LONG - [in] part of object to draw [not relevant]
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// void * - NULL
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// DVTARGETDEVICE * - [in] specifies the target device
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// HDC - [in] information context for target device
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// HDC - [in] target device context
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// LPCRECTL - [in] rectangle in which the object is drawn
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// LPCRECTL - [in] window extent and origin for metafiles
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// BOOL (*)(DWORD) - [in] callback for continuing or cancelling drawing
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// DWORD - [in] parameter to pass to callback.
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//
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// Output:
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// HRESULT
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//
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// Notes:
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// - we support the following OCX 96 extensions
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// a. flicker free drawing [multi-pass drawing]
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// b. pvAspect != NULL for optimized DC handling
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// c. prcBounds == NULL for windowless inplace active objects
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//
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STDMETHODIMP COleControl::Draw
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(
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DWORD dwDrawAspect,
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LONG lIndex,
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void *pvAspect,
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DVTARGETDEVICE *ptd,
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HDC hicTargetDevice,
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HDC hdcDraw,
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LPCRECTL prcBounds,
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LPCRECTL prcWBounds,
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BOOL (__stdcall *pfnContinue)(DWORD dwContinue),
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DWORD dwContinue
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)
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{
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HRESULT hr;
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RECTL rc;
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POINT pVp, pW;
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BOOL fOptimize = FALSE;
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int iMode;
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BYTE fMetafile = FALSE;
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BYTE fDeleteDC = FALSE;
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SIZE sWindowExt, sViewportExt;
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// support the aspects required for multi-pass drawing
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//
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switch (dwDrawAspect) {
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case DVASPECT_CONTENT:
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case DVASPECT_OPAQUE:
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case DVASPECT_TRANSPARENT:
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break;
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default:
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return DV_E_DVASPECT;
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}
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// first, have to do a little bit to support printing.
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//
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if (GetDeviceCaps(hdcDraw, TECHNOLOGY) == DT_METAFILE) {
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// We are dealing with a metafile.
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//
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fMetafile = TRUE;
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// If attributes DC is NULL, create one, based on ptd.
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//
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if (!hicTargetDevice) {
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// Does _CreateOleDC have to return an hDC
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// or can it be flagged to return an hIC
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// for this particular case?
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//
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hicTargetDevice = _CreateOleDC(ptd);
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fDeleteDC = TRUE;
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}
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}
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// check to see if we have any flags passed in the pvAspect parameter.
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//
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if (pvAspect && ((DVASPECTINFO *)pvAspect)->cb == sizeof(DVASPECTINFO))
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fOptimize = (((DVASPECTINFO *)pvAspect)->dwFlags & DVASPECTINFOFLAG_CANOPTIMIZE) ? TRUE : FALSE;
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// if they didn't give us a rectangle, just copy over ours
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//
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if (!prcBounds) {
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memcpy(&rc, &m_rcLocation, sizeof(rc));
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} else {
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// first -- convert the DC back to MM_TEXT mapping mode so that the
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// window proc and OnDraw can share the same painting code. save
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// some information on it, so we can restore it later [without using
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// a SaveDC/RestoreDC]
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//
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rc = *prcBounds;
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// Don't do anything to hdcDraw if it's a metafile.
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// The control's Draw method must make the appropriate
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// accomodations for drawing to a metafile
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//
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if (!fMetafile) {
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LPtoDP(hdcDraw, (POINT *)&rc, 2);
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SetViewportOrgEx(hdcDraw, 0, 0, &pVp);
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SetWindowOrgEx(hdcDraw, 0, 0, &pW);
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GetWindowExtEx(hdcDraw, &sWindowExt);
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GetViewportExtEx(hdcDraw, &sViewportExt);
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iMode = SetMapMode(hdcDraw, MM_TEXT);
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}
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}
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// prcWBounds is NULL and not used if we are not dealing with a metafile.
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// For metafiles, we pass on rc as *prcBounds, we should also include
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// prcWBounds
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//
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hr = OnDraw(dwDrawAspect, hdcDraw, &rc, prcWBounds, hicTargetDevice, fOptimize);
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// clean up the DC when we're done with it, if appropriate.
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//
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if (prcBounds && !fMetafile) {
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SetWindowOrgEx(hdcDraw, pW.x, pW.y, NULL);
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SetViewportOrgEx(hdcDraw, pVp.x, pVp.y, NULL);
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SetWindowExtEx(hdcDraw, sWindowExt.cx, sWindowExt.cy, NULL);
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SetViewportExtEx(hdcDraw, sViewportExt.cx, sViewportExt.cy, NULL);
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SetMapMode(hdcDraw, iMode);
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}
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// if we created a dc, blow it away now
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//
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if (fDeleteDC) DeleteDC(hicTargetDevice);
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return hr;
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}
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//=--------------------------------------------------------------------------=
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// COleControl::DoSuperClassPaint
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//=--------------------------------------------------------------------------=
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// design time painting of a subclassed control.
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//
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// Parameters:
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// HDC - [in] dc to work with
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// LPCRECTL - [in] rectangle to paint to. should be in pixels
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//
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// Output:
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// HRESULT
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//
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// Notes:
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//
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HRESULT COleControl::DoSuperClassPaint
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(
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HDC hdc,
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LPCRECTL prcBounds
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)
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{
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HWND hwnd;
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RECT rcClient;
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int iMapMode;
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POINT ptWOrg, ptVOrg;
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SIZE sWOrg, sVOrg;
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// make sure we have a window.
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//
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hwnd = CreateInPlaceWindow(0,0, FALSE);
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if (!hwnd)
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return E_FAIL;
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GetClientRect(hwnd, &rcClient);
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// set up the DC for painting. this code largely taken from the MFC CDK
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// DoSuperClassPaint() fn. doesn't always get things like command
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// buttons quite right ...
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//
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// NOTE: there is a windows 95 problem in which the font instance manager
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// will leak a bunch of bytes in the global GDI pool whenever you
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// change your extents and have an active font. this code gets around
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// this for on-screen cases, but not for printing [which shouldn't be
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// too serious, because you're not often changing your control size and
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// printing rapidly in succession]
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//
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if ((rcClient.right - rcClient.left != prcBounds->right - prcBounds->left)
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&& (rcClient.bottom - rcClient.top != prcBounds->bottom - prcBounds->top)) {
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iMapMode = SetMapMode(hdc, MM_ANISOTROPIC);
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SetWindowExtEx(hdc, rcClient.right, rcClient.bottom, &sWOrg);
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SetViewportExtEx(hdc, prcBounds->right - prcBounds->left, prcBounds->bottom - prcBounds->top, &sVOrg);
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}
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SetWindowOrgEx(hdc, 0, 0, &ptWOrg);
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SetViewportOrgEx(hdc, prcBounds->left, prcBounds->top, &ptVOrg);
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#if STRICT
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CallWindowProc((WNDPROC)SUBCLASSWNDPROCOFCONTROL(m_ObjectType), hwnd, (g_fSysWin95Shell) ? WM_PRINT : WM_PAINT, (WPARAM)hdc, (LPARAM)(g_fSysWin95Shell ? PRF_CHILDREN | PRF_CLIENT : 0));
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#else
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CallWindowProc((FARPROC)SUBCLASSWNDPROCOFCONTROL(m_ObjectType), hwnd, (g_fSysWin95Shell) ? WM_PRINT : WM_PAINT, (WPARAM)hdc, (LPARAM)(g_fSysWin95Shell ? PRF_CHILDREN | PRF_CLIENT : 0));
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#endif // STRICT
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return S_OK;
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}
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//=--------------------------------------------------------------------------=
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// COleControl::GetColorSet [IViewObject2]
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//=--------------------------------------------------------------------------=
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// Returns the logical palette that the control will use for drawing in its
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// IViewObject::Draw method with the corresponding parameters.
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//
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// Parameters:
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// DWORD - [in] how the object is to be represented
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// LONG - [in] part of the object to draw [not relevant]
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// void * - NULL
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// DVTARGETDEVICE * - [in] specifies the target device
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// HDC - [in] information context for the target device
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// LOGPALETTE ** - [out] where to put palette
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//
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// Output:
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// S_OK - Control has a palette, and returned it through the out param.
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// S_FALSE - Control does not currently have a palette.
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// E_NOTIMPL - Control will never have a palette so optimize handling of this control.
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//
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// Notes:
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//
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STDMETHODIMP COleControl::GetColorSet
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(
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DWORD dwDrawAspect,
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LONG lindex,
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void *IgnoreMe,
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DVTARGETDEVICE *ptd,
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HDC hicTargetDevice,
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LOGPALETTE **ppColorSet
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)
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{
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if (dwDrawAspect != DVASPECT_CONTENT)
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return DV_E_DVASPECT;
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*ppColorSet = NULL;
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return (OnGetPalette(hicTargetDevice, ppColorSet)) ? ((*ppColorSet) ? S_OK : S_FALSE) : E_NOTIMPL;
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}
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//=--------------------------------------------------------------------------=
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// COleControl::Freeze [IViewObject2]
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//=--------------------------------------------------------------------------=
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// Freezes a certain aspect of the object's presentation so that it does not
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// change until the IViewObject::Unfreeze method is called.
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//
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// Parameters:
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// DWORD - [in] aspect
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// LONG - [in] part of object to draw
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// void * - NULL
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// DWORD * - [out] for Unfreeze
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//
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// Output:
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// HRESULT
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//
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// Notes:
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//
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STDMETHODIMP COleControl::Freeze
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(
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DWORD dwDrawAspect,
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LONG lIndex,
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void *IgnoreMe,
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DWORD *pdwFreeze
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)
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{
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return E_NOTIMPL;
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}
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//=--------------------------------------------------------------------------=
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// COleControl::Unfreeze [IVewObject2]
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//=--------------------------------------------------------------------------=
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// Releases a previously frozen drawing. The most common use of this method
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// is for banded printing.
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//
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// Parameters:
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// DWORD - [in] cookie from freeze
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//
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// Output:
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// HRESULT
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//
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// Notes:
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//
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STDMETHODIMP COleControl::Unfreeze
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(
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DWORD dwFreeze
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)
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{
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return E_NOTIMPL;
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}
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//=--------------------------------------------------------------------------=
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// COleControl::SetAdvise [IViewObject2]
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//=--------------------------------------------------------------------------=
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// Sets up a connection between the control and an advise sink so that the
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// advise sink can be notified about changes in the control's view.
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//
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// Parameters:
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// DWORD - [in] aspect
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// DWORD - [in] info about the sink
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// IAdviseSink * - [in] the sink
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//
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// Output:
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// HRESULT
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//
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// Notes:
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//
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STDMETHODIMP COleControl::SetAdvise
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(
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DWORD dwAspects,
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DWORD dwAdviseFlags,
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IAdviseSink *pAdviseSink
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)
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{
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// if it's not a content aspect, we don't support it.
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//
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if (!(dwAspects & DVASPECT_CONTENT)) {
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return DV_E_DVASPECT;
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}
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// set up some flags [we gotta stash for GetAdvise ...]
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//
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m_fViewAdvisePrimeFirst = (dwAdviseFlags & ADVF_PRIMEFIRST) ? TRUE : FALSE;
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m_fViewAdviseOnlyOnce = (dwAdviseFlags & ADVF_ONLYONCE) ? TRUE : FALSE;
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RELEASE_OBJECT(m_pViewAdviseSink);
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m_pViewAdviseSink = pAdviseSink;
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ADDREF_OBJECT(m_pViewAdviseSink);
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// prime them if they want it [we need to store this so they can get flags later]
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//
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if (m_fViewAdvisePrimeFirst)
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ViewChanged();
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return S_OK;
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}
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//=--------------------------------------------------------------------------=
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// COleControl::GetAdvise [IViewObject2]
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//=--------------------------------------------------------------------------=
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// Retrieves the existing advisory connection on the control if there is one.
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// This method simply returns the parameters used in the most recent call to
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// the IViewObject::SetAdvise method.
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//
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// Parameters:
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// DWORD * - [out] aspects
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// DWORD * - [out] advise flags
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// IAdviseSink ** - [out] the sink
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//
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// Output:
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// HRESULT
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//
|
||
|
|
// Notes;
|
||
|
|
//
|
||
|
|
STDMETHODIMP COleControl::GetAdvise
|
||
|
|
(
|
||
|
|
DWORD *pdwAspects,
|
||
|
|
DWORD *pdwAdviseFlags,
|
||
|
|
IAdviseSink **ppAdviseSink
|
||
|
|
)
|
||
|
|
{
|
||
|
|
// if they want it, give it to them
|
||
|
|
//
|
||
|
|
if (pdwAspects)
|
||
|
|
*pdwAspects = DVASPECT_CONTENT;
|
||
|
|
|
||
|
|
if (pdwAdviseFlags) {
|
||
|
|
*pdwAdviseFlags = 0;
|
||
|
|
if (m_fViewAdviseOnlyOnce) *pdwAdviseFlags |= ADVF_ONLYONCE;
|
||
|
|
if (m_fViewAdvisePrimeFirst) *pdwAdviseFlags |= ADVF_PRIMEFIRST;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (ppAdviseSink) {
|
||
|
|
*ppAdviseSink = m_pViewAdviseSink;
|
||
|
|
ADDREF_OBJECT(*ppAdviseSink);
|
||
|
|
}
|
||
|
|
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
//=--------------------------------------------------------------------------=
|
||
|
|
// COleControl::GetExtent [IViewObject2]
|
||
|
|
//=--------------------------------------------------------------------------=
|
||
|
|
// Returns the size that the control will be drawn on the
|
||
|
|
// specified target device.
|
||
|
|
//
|
||
|
|
// Parameters:
|
||
|
|
// DWORD - [in] draw aspect
|
||
|
|
// LONG - [in] part of object to draw
|
||
|
|
// DVTARGETDEVICE * - [in] information about target device
|
||
|
|
// LPSIZEL - [out] where to put the size
|
||
|
|
//
|
||
|
|
// Output:
|
||
|
|
// HRESULT
|
||
|
|
//
|
||
|
|
// Notes:
|
||
|
|
//
|
||
|
|
STDMETHODIMP COleControl::GetExtent
|
||
|
|
(
|
||
|
|
DWORD dwDrawAspect,
|
||
|
|
LONG lindex,
|
||
|
|
DVTARGETDEVICE *ptd,
|
||
|
|
LPSIZEL psizel
|
||
|
|
)
|
||
|
|
{
|
||
|
|
// we already have an implementation of this [from IOleObject]
|
||
|
|
//
|
||
|
|
return GetExtent(dwDrawAspect, psizel);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//=--------------------------------------------------------------------------=
|
||
|
|
// COleControl::OnGetPalette [overridable]
|
||
|
|
//=--------------------------------------------------------------------------=
|
||
|
|
// called when the host wants palette information. ideally, people should use
|
||
|
|
// this sparingly and carefully.
|
||
|
|
//
|
||
|
|
// Parameters:
|
||
|
|
// HDC - [in] HIC for the target device
|
||
|
|
// LOGPALETTE ** - [out] where to put the palette
|
||
|
|
//
|
||
|
|
// Output:
|
||
|
|
// BOOL - TRUE means we processed it, false means nope.
|
||
|
|
//
|
||
|
|
// Notes:
|
||
|
|
//
|
||
|
|
BOOL COleControl::OnGetPalette
|
||
|
|
(
|
||
|
|
HDC hicTargetDevice,
|
||
|
|
LOGPALETTE **ppColorSet
|
||
|
|
)
|
||
|
|
{
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//=--------------------------------------------------------------------------=
|
||
|
|
// COleControl::GetRect [IViewObjectEx]
|
||
|
|
//=--------------------------------------------------------------------------=
|
||
|
|
// returns a rectnagle describing a given drawing aspect
|
||
|
|
//
|
||
|
|
// Parameters:
|
||
|
|
// DWORD - [in] aspect
|
||
|
|
// LPRECTL - [out] region rectangle
|
||
|
|
//
|
||
|
|
// Output:
|
||
|
|
// HRESULT
|
||
|
|
//
|
||
|
|
// Notes:
|
||
|
|
//
|
||
|
|
STDMETHODIMP COleControl::GetRect
|
||
|
|
(
|
||
|
|
DWORD dvAspect,
|
||
|
|
LPRECTL prcRect
|
||
|
|
)
|
||
|
|
{
|
||
|
|
RECTL rc;
|
||
|
|
BOOL f;
|
||
|
|
|
||
|
|
// call the user routine and let them return the size
|
||
|
|
//
|
||
|
|
f = OnGetRect(dvAspect, &rc);
|
||
|
|
if (!f) return DV_E_DVASPECT;
|
||
|
|
|
||
|
|
// transform these dudes.
|
||
|
|
//
|
||
|
|
PixelToHiMetric((LPSIZEL)&rc, (LPSIZEL)prcRect);
|
||
|
|
PixelToHiMetric((LPSIZEL)((LPBYTE)&rc + sizeof(SIZEL)), (LPSIZEL)((LPBYTE)prcRect + sizeof(SIZEL)));
|
||
|
|
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
//=--------------------------------------------------------------------------=
|
||
|
|
// COleControl::GetViewStatus [IViewObjectEx]
|
||
|
|
//=--------------------------------------------------------------------------=
|
||
|
|
// returns information about the opactiy of the object and what drawing
|
||
|
|
// aspects are supported
|
||
|
|
//
|
||
|
|
// Parameters:
|
||
|
|
// DWORD * - [out] the status
|
||
|
|
//
|
||
|
|
/// Output:
|
||
|
|
// HRESULT
|
||
|
|
//
|
||
|
|
// Notes:
|
||
|
|
//
|
||
|
|
STDMETHODIMP COleControl::GetViewStatus
|
||
|
|
(
|
||
|
|
DWORD *pdwStatus
|
||
|
|
)
|
||
|
|
{
|
||
|
|
// depending on the flag in the CONTROLOBJECTINFO structure, indicate our
|
||
|
|
// transparency vs opacity.
|
||
|
|
// OVERRIDE: controls that wish to support multi-pass drawing should
|
||
|
|
// override this routine and return, in addition to the flags indication
|
||
|
|
// opacity, flags indicating what sort of drawing aspects they support.
|
||
|
|
//
|
||
|
|
*pdwStatus = FCONTROLISOPAQUE(m_ObjectType) ? VIEWSTATUS_OPAQUE : 0;
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
//=--------------------------------------------------------------------------=
|
||
|
|
// COleControl::QueryHitPoint [IViewObjectEx]
|
||
|
|
//=--------------------------------------------------------------------------=
|
||
|
|
// indicates whether a point is within a given aspect of an object.
|
||
|
|
//
|
||
|
|
// Parameters:
|
||
|
|
// DWORD - [in] aspect
|
||
|
|
// LPCRECT - [in] Bounds rectangle
|
||
|
|
// POINT - [in] hit location client coordinates
|
||
|
|
// LONG - [in] what the container considers close
|
||
|
|
// DWORD * - [out] info about the hit
|
||
|
|
//
|
||
|
|
// Output:
|
||
|
|
// HRESULT
|
||
|
|
//
|
||
|
|
// Notes:
|
||
|
|
//
|
||
|
|
STDMETHODIMP COleControl::QueryHitPoint
|
||
|
|
(
|
||
|
|
DWORD dvAspect,
|
||
|
|
LPCRECT prcBounds,
|
||
|
|
POINT ptLocation,
|
||
|
|
LONG lCloseHint,
|
||
|
|
DWORD *pdwHitResult
|
||
|
|
)
|
||
|
|
{
|
||
|
|
// OVERRIDE: override me if you want to provide additional [non-opaque]
|
||
|
|
// functionality
|
||
|
|
//
|
||
|
|
if (dvAspect != DVASPECT_CONTENT)
|
||
|
|
return DV_E_DVASPECT;
|
||
|
|
|
||
|
|
*pdwHitResult = PtInRect(prcBounds, ptLocation) ? HITRESULT_HIT : HITRESULT_OUTSIDE;
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
//=--------------------------------------------------------------------------=
|
||
|
|
// COleControl::QueryHitRect [IViewObjectEx]
|
||
|
|
//=--------------------------------------------------------------------------=
|
||
|
|
// indicates wheter any point in a rectangle is within a given drawing aspect
|
||
|
|
// of an object.
|
||
|
|
//
|
||
|
|
// Parameters:
|
||
|
|
// DWORD - [in] aspect
|
||
|
|
// LPCRECT - [in] bounds
|
||
|
|
// LPCRECT - [in] location
|
||
|
|
// LONG - [in] what host considers close
|
||
|
|
// DWORD * - [out] hit result
|
||
|
|
//
|
||
|
|
// Output:
|
||
|
|
// HRESULT
|
||
|
|
//
|
||
|
|
// Notes:
|
||
|
|
//
|
||
|
|
STDMETHODIMP COleControl::QueryHitRect
|
||
|
|
(
|
||
|
|
DWORD dvAspect,
|
||
|
|
LPCRECT prcBounds,
|
||
|
|
LPCRECT prcLocation,
|
||
|
|
LONG lCloseHint,
|
||
|
|
DWORD *pdwHitResult
|
||
|
|
)
|
||
|
|
{
|
||
|
|
RECT rc;
|
||
|
|
|
||
|
|
// OVERRIDE: override this for additional behaviour
|
||
|
|
//
|
||
|
|
if (dvAspect != DVASPECT_CONTENT)
|
||
|
|
return DV_E_DVASPECT;
|
||
|
|
|
||
|
|
*pdwHitResult = IntersectRect(&rc, prcBounds, prcLocation) ? HITRESULT_HIT : HITRESULT_OUTSIDE;
|
||
|
|
return S_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
//=--------------------------------------------------------------------------=
|
||
|
|
// COleControl::GetNaturalExtent [IViewObjectEx]
|
||
|
|
//=--------------------------------------------------------------------------=
|
||
|
|
// supports two types of control sizing, content and integral.
|
||
|
|
//
|
||
|
|
// Parameters:
|
||
|
|
// DWORD - [in] aspect
|
||
|
|
// LONG - [in] index
|
||
|
|
// DVTARGETDEVICE * - [in] target device information
|
||
|
|
// HDC - [in] HIC
|
||
|
|
// DVEXTENTINFO * - [in] sizing data
|
||
|
|
// LPSIZEL - [out] sizing data retunred by control
|
||
|
|
//
|
||
|
|
// Output:
|
||
|
|
// HRESULT
|
||
|
|
//
|
||
|
|
// Notes:
|
||
|
|
//
|
||
|
|
STDMETHODIMP COleControl::GetNaturalExtent
|
||
|
|
(
|
||
|
|
DWORD dvAspect,
|
||
|
|
LONG lIndex,
|
||
|
|
DVTARGETDEVICE *ptd,
|
||
|
|
HDC hicTargetDevice,
|
||
|
|
DVEXTENTINFO *pExtentInfo,
|
||
|
|
LPSIZEL pSizel
|
||
|
|
)
|
||
|
|
{
|
||
|
|
return E_NOTIMPL;
|
||
|
|
}
|
||
|
|
|
||
|
|
//=--------------------------------------------------------------------------=
|
||
|
|
// COleControl::OnGetRect [overridable
|
||
|
|
//=--------------------------------------------------------------------------=
|
||
|
|
// returns our rectangle
|
||
|
|
//
|
||
|
|
// Parameters:
|
||
|
|
// DWORD - [in] aspect they want the rect for
|
||
|
|
// RECTL * - [out] the rectangle that matches this aspect
|
||
|
|
//
|
||
|
|
// Output:
|
||
|
|
// BOOL - false means we don't like the aspect
|
||
|
|
//
|
||
|
|
// Notes:
|
||
|
|
//
|
||
|
|
BOOL COleControl::OnGetRect
|
||
|
|
(
|
||
|
|
DWORD dvAspect,
|
||
|
|
RECTL *pRect
|
||
|
|
)
|
||
|
|
{
|
||
|
|
// by default, we only support content drawing.
|
||
|
|
//
|
||
|
|
if (dvAspect != DVASPECT_CONTENT)
|
||
|
|
return FALSE;
|
||
|
|
|
||
|
|
// just give them our bounding rectangle
|
||
|
|
//
|
||
|
|
*((LPRECT)pRect) = m_rcLocation;
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
//=--------------------------------------------------------------------------=
|
||
|
|
// _CreateOleDC
|
||
|
|
//=--------------------------------------------------------------------------=
|
||
|
|
// creates an HDC given a DVTARGETDEVICE structure.
|
||
|
|
//
|
||
|
|
// Parameters:
|
||
|
|
// DVTARGETDEVICE * - [in] duh.
|
||
|
|
//
|
||
|
|
// Output:
|
||
|
|
// HDC
|
||
|
|
//
|
||
|
|
// Notes:
|
||
|
|
//
|
||
|
|
HDC _CreateOleDC
|
||
|
|
(
|
||
|
|
DVTARGETDEVICE *ptd
|
||
|
|
)
|
||
|
|
{
|
||
|
|
LPDEVMODEW pDevModeW;
|
||
|
|
DEVMODEA DevModeA, *pDevModeA;
|
||
|
|
LPOLESTR lpwszDriverName;
|
||
|
|
LPOLESTR lpwszDeviceName;
|
||
|
|
LPOLESTR lpwszPortName;
|
||
|
|
HDC hdc;
|
||
|
|
|
||
|
|
// return screen DC for NULL target device
|
||
|
|
//
|
||
|
|
if (!ptd)
|
||
|
|
return CreateDC("DISPLAY", NULL, NULL, NULL);
|
||
|
|
|
||
|
|
if (ptd->tdExtDevmodeOffset == 0)
|
||
|
|
pDevModeW = NULL;
|
||
|
|
else
|
||
|
|
pDevModeW = (LPDEVMODEW)((LPSTR)ptd + ptd->tdExtDevmodeOffset);
|
||
|
|
|
||
|
|
lpwszDriverName = (LPOLESTR)((BYTE*)ptd + ptd->tdDriverNameOffset);
|
||
|
|
lpwszDeviceName = (LPOLESTR)((BYTE*)ptd + ptd->tdDeviceNameOffset);
|
||
|
|
lpwszPortName = (LPOLESTR)((BYTE*)ptd + ptd->tdPortNameOffset);
|
||
|
|
|
||
|
|
MAKE_ANSIPTR_FROMWIDE(pszDriverName, lpwszDriverName);
|
||
|
|
MAKE_ANSIPTR_FROMWIDE(pszDeviceName, lpwszDeviceName);
|
||
|
|
MAKE_ANSIPTR_FROMWIDE(pszPortName, lpwszPortName);
|
||
|
|
|
||
|
|
// wow, this sucks.
|
||
|
|
//
|
||
|
|
if (pDevModeW) {
|
||
|
|
WideCharToMultiByte(CP_ACP, 0, pDevModeW->dmDeviceName, -1, (LPSTR)DevModeA.dmDeviceName, CCHDEVICENAME, NULL, NULL);
|
||
|
|
memcpy(&DevModeA.dmSpecVersion, &pDevModeW->dmSpecVersion,
|
||
|
|
offsetof(DEVMODEA, dmFormName) - offsetof(DEVMODEA, dmSpecVersion));
|
||
|
|
WideCharToMultiByte(CP_ACP, 0, pDevModeW->dmFormName, -1, (LPSTR)DevModeA.dmFormName, CCHFORMNAME, NULL, NULL);
|
||
|
|
memcpy(&DevModeA.dmLogPixels, &pDevModeW->dmLogPixels, sizeof(DEVMODEA) - offsetof(DEVMODEA, dmLogPixels));
|
||
|
|
if (pDevModeW->dmDriverExtra) {
|
||
|
|
pDevModeA = (DEVMODEA *)CtlHeapAlloc(g_hHeap, 0, sizeof(DEVMODEA) + pDevModeW->dmDriverExtra);
|
||
|
|
if (!pDevModeA) return NULL;
|
||
|
|
memcpy(pDevModeA, &DevModeA, sizeof(DEVMODEA));
|
||
|
|
memcpy(pDevModeA + 1, pDevModeW + 1, pDevModeW->dmDriverExtra);
|
||
|
|
} else
|
||
|
|
pDevModeA = &DevModeA;
|
||
|
|
|
||
|
|
DevModeA.dmSize = sizeof(DEVMODEA);
|
||
|
|
} else
|
||
|
|
pDevModeA = NULL;
|
||
|
|
|
||
|
|
hdc = CreateDC(pszDriverName, pszDeviceName, pszPortName, pDevModeA);
|
||
|
|
if (pDevModeA != &DevModeA) CtlHeapFree(g_hHeap, 0, pDevModeA);
|
||
|
|
return hdc;
|
||
|
|
}
|
||
|
|
|
||
|
|
|