727 lines
15 KiB
C
727 lines
15 KiB
C
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//==========================================================================;
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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
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// TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR
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// A PARTICULAR PURPOSE.
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//
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// Copyright (C) 1993 - 1995 Microsoft Corporation. All Rights Reserved.
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//
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//--------------------------------------------------------------------------;
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//
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// zyztlb.c
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//
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// Description:
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//
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//
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// History:
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// 5/18/93
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//
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//==========================================================================;
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#include <windows.h>
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#include <windowsx.h>
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#include <stdlib.h>
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#include "appport.h"
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#include "zyztlb.h"
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#include "debug.h"
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//==========================================================================;
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//
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//
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//
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//
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//==========================================================================;
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//--------------------------------------------------------------------------;
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//
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// int GetRealTextMetrics
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//
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// Description:
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// This function gets the textmetrics of the font currently selected
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// into the hdc. It returns the average char width as the return value.
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//
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// This function computes the average character width correctly by
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// using GetTextExtent() on the string "abc...xzyABC...XYZ" which works
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// out much better for proportional fonts. This is also necessary
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// for correct alignment between dialog and client units.
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//
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// Note that this function returns the same TEXTMETRIC values that
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// GetTextMetrics() does, it simply has a different return value.
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//
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// Arguments:
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// HDC hdc:
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//
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// LPTEXTMETRIC ptm:
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//
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// Return (int):
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//
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// History:
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// 05/11/93
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//
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//--------------------------------------------------------------------------;
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int FNGLOBAL GetRealTextMetrics
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(
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HDC hdc,
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LPTEXTMETRIC ptm
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)
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{
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TCHAR achAlphabet[26 * 2]; // upper and lower case
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SIZE sSize;
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UINT u;
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int nAveWidth;
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//
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// get the text metrics of the current font. note that GetTextMetrics
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// gets the incorrect nAveCharWidth value for proportional fonts.
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//
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GetTextMetrics(hdc, ptm);
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nAveWidth = ptm->tmAveCharWidth;
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//
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// if it's not a variable pitch font GetTextMetrics was correct
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// so just return.
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//
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if (ptm->tmPitchAndFamily & FIXED_PITCH)
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{
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//
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//
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//
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for (u = 0; u < 26; u++)
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{
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achAlphabet[u] = (TCHAR)(u + (UINT)'a');
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achAlphabet[u + 26] = (TCHAR)(u + (UINT)'A');
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}
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//
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// round up
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//
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GetTextExtentPoint(hdc, achAlphabet, SIZEOF(achAlphabet), &sSize);
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nAveWidth = ((sSize.cx / 26) + 1) / 2;
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}
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//
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// return the calculated average char width
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//
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return (nAveWidth);
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} // GetRealTextMetrics()
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//==========================================================================;
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//
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//
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//
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//
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//==========================================================================;
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//--------------------------------------------------------------------------;
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//
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// BOOL TlbPaint
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//
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// Description:
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//
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//
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// Arguments:
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// PZYZTABBEDLISTBOX ptlb:
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//
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// HWND hwnd:
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//
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// HDC hdc:
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//
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// Return (BOOL):
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//
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// History:
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// 05/17/93
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//
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//--------------------------------------------------------------------------;
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BOOL FNGLOBAL TlbPaint
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(
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PZYZTABBEDLISTBOX ptlb,
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HWND hwnd,
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HDC hdc
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)
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{
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RECT rc;
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HFONT hfont;
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COLORREF crBk;
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COLORREF crText;
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int nHeight;
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//
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//
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//
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hfont = GetWindowFont(ptlb->hlb);
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if (NULL == hfont)
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hfont = GetStockFont(SYSTEM_FONT);
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hfont = SelectObject(hdc, hfont);
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crBk = SetBkColor(hdc, GetSysColor(COLOR_ACTIVECAPTION));
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crText = SetTextColor(hdc, GetSysColor(COLOR_CAPTIONTEXT));
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//
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// compute bounding rect for title only
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//
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rc = ptlb->rc;
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nHeight = min(ptlb->nFontHeight, rc.bottom - rc.top);
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rc.bottom = rc.top + nHeight;
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ExtTextOut(hdc, rc.left, rc.top, ETO_OPAQUE, &rc, NULL, 0, NULL);
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TabbedTextOut(hdc, rc.left, rc.top,
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ptlb->pszTitleText,
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ptlb->cchTitleText,
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ptlb->uTabStops,
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ptlb->panTitleTabs, 0);
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//
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// restore the dc
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//
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SetBkColor(hdc, crBk);
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SetTextColor(hdc, crText);
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SelectObject(hdc, hfont);
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return (TRUE);
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} // TlbPaint()
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//--------------------------------------------------------------------------;
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//
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// BOOL TlbMove
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//
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// Description:
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//
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//
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// Arguments:
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// PZYZTABBEDLISTBOX ptlb:
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//
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// PRECT prc:
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//
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// BOOL fRedraw:
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//
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// Return (BOOL):
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//
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// History:
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// 05/16/93
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//
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//--------------------------------------------------------------------------;
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BOOL FNGLOBAL TlbMove
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(
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PZYZTABBEDLISTBOX ptlb,
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PRECT prc,
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BOOL fRedraw
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)
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{
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RECT rc;
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int nHeight;
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HWND hwnd;
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hwnd = GetParent(ptlb->hlb);
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//
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// invalidate only the region occupied by the current title bar. this
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// will make sure that area gets repainted. the listbox portion will
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// be invalidated correctly by the SetWindowPos() function below..
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//
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rc = ptlb->rc;
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nHeight = min(ptlb->nFontHeight, rc.bottom - rc.top);
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rc.bottom = rc.top + nHeight;
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InvalidateRect(hwnd, &rc, TRUE);
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//
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// now move the listbox--we modify values in the rect structure, so
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// copy to local storage
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//
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rc = *prc;
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//
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// leave room at the top of the bounding rect for the title text
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//
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nHeight = min(ptlb->nFontHeight, rc.bottom - rc.top);
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rc.top += nHeight;
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SetWindowPos(ptlb->hlb, NULL, rc.left, rc.top, rc.right - rc.left,
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rc.bottom - rc.top, SWP_NOZORDER);
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//
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// save the new location and invalidate the area so it is repainted
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//
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ptlb->rc = *prc;
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InvalidateRect(hwnd, prc, TRUE);
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if (fRedraw)
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{
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UpdateWindow(hwnd);
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}
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return (TRUE);
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} // TlbMove()
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//--------------------------------------------------------------------------;
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//
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// BOOL TlbRecalcTabs
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//
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// Description:
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//
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//
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// Arguments:
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// PZYZTABBEDLISTBOX ptlb:
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//
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// Return (BOOL):
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//
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// History:
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// 05/18/93
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//
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//--------------------------------------------------------------------------;
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BOOL FNLOCAL TlbRecalcTabs
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(
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PZYZTABBEDLISTBOX ptlb
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)
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{
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static TCHAR szGonzoThing[] = TEXT("M");
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int anTabsList[TLB_MAX_TAB_STOPS];
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HDC hdc;
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HFONT hfont;
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TEXTMETRIC tm;
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int nAveCharWidth;
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UINT u;
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int nWidth;
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int nPrevTabTitle;
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int nPrevTabList;
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SIZE sSize;
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//
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//
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//
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hdc = GetDC(NULL);
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{
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//
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// get the average char width and height of the current font so we
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// can compute tabs correctly. note that GetTextMetrics is pretty
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// bogus when it comes to the average char width--it normally gives
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// you the width of the character 'x'. what it should be is the
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// average width of all capitals and lower case letters..
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//
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hfont = GetWindowFont(ptlb->hlb);
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if (NULL == hfont)
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hfont = GetStockFont(SYSTEM_FONT);
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hfont = SelectObject(hdc, hfont);
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#if 0
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GetTextMetrics(hdc, &tm);
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nAveCharWidth = tm.tmAveCharWidth;
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#else
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nAveCharWidth = GetRealTextMetrics(hdc, &tm);
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#endif
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ptlb->nFontHeight = tm.tmHeight;
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//
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//
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//
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GetTextExtentPoint(hdc, szGonzoThing, 1, &sSize);
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//
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//
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//
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hfont = SelectObject(hdc, hfont);
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}
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ReleaseDC(NULL, hdc);
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//
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// calculate the width of each column
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//
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nPrevTabTitle = 0;
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nPrevTabList = 0;
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for (u = 0; u < ptlb->uTabStops; u++)
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{
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// nWidth = nAveCharWidth * ptlb->panTabs[u] + nAveCharWidth * 2;
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nWidth = sSize.cx * ptlb->panTabs[u] + (sSize.cx * 2);
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//
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// set tabstop for title text--this is in client units
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// for TabbedTextOut in TlbPaint
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//
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ptlb->panTitleTabs[u] = nPrevTabTitle + nWidth;
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nPrevTabTitle = ptlb->panTitleTabs[u];
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//
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// set tabstop for listbox--this is in dialog units
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//
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anTabsList[u] = nPrevTabList + MulDiv(nWidth, 4, nAveCharWidth);
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nPrevTabList = anTabsList[u];
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}
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//
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// now setup the tabstops in the listbox
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//
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ListBox_SetTabStops(ptlb->hlb, ptlb->uTabStops, anTabsList);
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return (TRUE);
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} // TlbRecalcTabs()
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//--------------------------------------------------------------------------;
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//
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// HFONT TlbSetFont
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//
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// Description:
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//
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//
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// Arguments:
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// PZYZTABBEDLISTBOX ptlb:
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//
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// HFONT hfont:
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//
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// BOOL fRedraw:
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//
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// Return (HFONT):
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//
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// History:
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// 05/16/93
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//
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//--------------------------------------------------------------------------;
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HFONT FNGLOBAL TlbSetFont
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(
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PZYZTABBEDLISTBOX ptlb,
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HFONT hfont,
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BOOL fRedraw
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)
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{
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HFONT hfontOld;
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//
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//
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//
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hfontOld = GetWindowFont(ptlb->hlb);
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SetWindowFont(ptlb->hlb, hfont, FALSE);
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TlbRecalcTabs(ptlb);
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TlbMove(ptlb, &ptlb->rc, fRedraw);
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return (hfontOld);
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} // TlbSetFont()
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//--------------------------------------------------------------------------;
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//
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// BOOL TlbSetTitleAndTabs
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//
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// Description:
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|
|
// This function sets the title text and tab stops for a Tabbed List
|
||
|
|
// Box (TLB). The pszTitleFormat specifies the title text for each
|
||
|
|
// column along with the tabstop position for each column. The format
|
||
|
|
// of this string is as follows:
|
||
|
|
//
|
||
|
|
// <columnname1>\t<tab1>!<columnname2>
|
||
|
|
//
|
||
|
|
// TCHAR szTlbThings[] = TEXT("Index\t6!Code\t5!Name");
|
||
|
|
//
|
||
|
|
//
|
||
|
|
// Arguments:
|
||
|
|
// PZYZTABBEDLISTBOX ptlb:
|
||
|
|
//
|
||
|
|
// PTSTR pszTitleFormat:
|
||
|
|
//
|
||
|
|
// BOOL fRedraw:
|
||
|
|
//
|
||
|
|
// Return (BOOL):
|
||
|
|
//
|
||
|
|
// History:
|
||
|
|
// 05/18/93
|
||
|
|
//
|
||
|
|
//--------------------------------------------------------------------------;
|
||
|
|
|
||
|
|
BOOL FNGLOBAL TlbSetTitleAndTabs
|
||
|
|
(
|
||
|
|
PZYZTABBEDLISTBOX ptlb,
|
||
|
|
PTSTR pszTitleFormat,
|
||
|
|
BOOL fRedraw
|
||
|
|
)
|
||
|
|
{
|
||
|
|
TCHAR szTitleText[TLB_MAX_TITLE_CHARS];
|
||
|
|
int anTabs[TLB_MAX_TAB_STOPS];
|
||
|
|
PTSTR pch;
|
||
|
|
PTSTR pchTitleText;
|
||
|
|
UINT uTabStops;
|
||
|
|
UINT cchTitleText;
|
||
|
|
HWND hwnd;
|
||
|
|
|
||
|
|
//
|
||
|
|
// parse the title format counting tab stops and actual size of title
|
||
|
|
// text
|
||
|
|
//
|
||
|
|
uTabStops = 0;
|
||
|
|
pchTitleText = szTitleText;
|
||
|
|
for (pch = pszTitleFormat; '\0' != *pch; )
|
||
|
|
{
|
||
|
|
TCHAR ch;
|
||
|
|
|
||
|
|
//
|
||
|
|
// scan to tab
|
||
|
|
//
|
||
|
|
while ('\0' != (ch = *pch))
|
||
|
|
{
|
||
|
|
*pchTitleText++ = *pch++;
|
||
|
|
|
||
|
|
if ('\t' == ch)
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ('\0' == ch)
|
||
|
|
break;
|
||
|
|
|
||
|
|
//
|
||
|
|
// grab the next tab stop value
|
||
|
|
//
|
||
|
|
anTabs[uTabStops] = atoi(pch);
|
||
|
|
uTabStops++;
|
||
|
|
|
||
|
|
//
|
||
|
|
// skip to start of next column name
|
||
|
|
//
|
||
|
|
while ('!' != *pch++)
|
||
|
|
;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// terminate the converted title text
|
||
|
|
//
|
||
|
|
*pchTitleText = '\0';
|
||
|
|
cchTitleText = lstrlen(szTitleText);
|
||
|
|
|
||
|
|
//
|
||
|
|
// free the memory used for the previous tab stops and title text
|
||
|
|
//
|
||
|
|
if (NULL != ptlb->panTabs)
|
||
|
|
{
|
||
|
|
LocalFree((HLOCAL)ptlb->panTabs);
|
||
|
|
|
||
|
|
ptlb->uTabStops = 0;
|
||
|
|
ptlb->panTabs = NULL;
|
||
|
|
ptlb->panTitleTabs = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (NULL != ptlb->pszTitleText)
|
||
|
|
{
|
||
|
|
LocalFree((HLOCAL)ptlb->pszTitleText);
|
||
|
|
|
||
|
|
ptlb->cchTitleText = 0;
|
||
|
|
ptlb->pszTitleText = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// allocate new space for tab stops. there are two different tab
|
||
|
|
// arrays:
|
||
|
|
//
|
||
|
|
// panTabs: original tab values as passed by caller. these are
|
||
|
|
// virtual tab locations represented as number of characters. we
|
||
|
|
// need to keep these values for recomputing the real tabs when
|
||
|
|
// the font changes.
|
||
|
|
//
|
||
|
|
// panTitleTabs: these values are computed by TlbRecalcTabs and
|
||
|
|
// are actual tab positions in client coordinates for the title
|
||
|
|
// text (needed for TabbedTextOut in TlbPaint).
|
||
|
|
//
|
||
|
|
// the tabs for the listbox are computed and set in TlbRecalcTabs
|
||
|
|
//
|
||
|
|
if (0 != uTabStops)
|
||
|
|
{
|
||
|
|
ptlb->panTabs = (PINT)LocalAlloc(LPTR, (uTabStops * sizeof(int)) * 2);
|
||
|
|
if (NULL == ptlb->panTabs)
|
||
|
|
return (FALSE);
|
||
|
|
|
||
|
|
ptlb->uTabStops = uTabStops;
|
||
|
|
ptlb->panTitleTabs = ptlb->panTabs + uTabStops;
|
||
|
|
memcpy(ptlb->panTabs, anTabs, uTabStops * sizeof(int));
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// allocate space for the converted title text (stripped of the tab
|
||
|
|
// spacing values). this string is passed directly to TabbedTextOut
|
||
|
|
// in TlbPaint.
|
||
|
|
//
|
||
|
|
if (0 != cchTitleText)
|
||
|
|
{
|
||
|
|
ptlb->pszTitleText = (PTSTR)LocalAlloc(LPTR, (cchTitleText + 1) * sizeof(TCHAR));
|
||
|
|
if (NULL == ptlb->pszTitleText)
|
||
|
|
return (FALSE);
|
||
|
|
|
||
|
|
ptlb->cchTitleText = cchTitleText;
|
||
|
|
lstrcpy(ptlb->pszTitleText, szTitleText);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
//
|
||
|
|
//
|
||
|
|
TlbRecalcTabs(ptlb);
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// force a complete repaint of the title text and listbox--redraw
|
||
|
|
// immediately if we are supposed to
|
||
|
|
//
|
||
|
|
hwnd = GetParent(ptlb->hlb);
|
||
|
|
InvalidateRect(hwnd, &ptlb->rc, TRUE);
|
||
|
|
if (fRedraw)
|
||
|
|
{
|
||
|
|
UpdateWindow(hwnd);
|
||
|
|
}
|
||
|
|
|
||
|
|
return (TRUE);
|
||
|
|
} // TlbSetTitleAndTabs()
|
||
|
|
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------------;
|
||
|
|
//
|
||
|
|
// PZYZTABBEDLISTBOX TlbDestroy
|
||
|
|
//
|
||
|
|
// Description:
|
||
|
|
//
|
||
|
|
//
|
||
|
|
// Arguments:
|
||
|
|
// PZYZTABBEDLISTBOX ptlb:
|
||
|
|
//
|
||
|
|
// Return (PZYZTABBEDLISTBOX):
|
||
|
|
//
|
||
|
|
// History:
|
||
|
|
// 05/16/93
|
||
|
|
//
|
||
|
|
//--------------------------------------------------------------------------;
|
||
|
|
|
||
|
|
PZYZTABBEDLISTBOX FNGLOBAL TlbDestroy
|
||
|
|
(
|
||
|
|
PZYZTABBEDLISTBOX ptlb
|
||
|
|
)
|
||
|
|
{
|
||
|
|
HWND hwnd;
|
||
|
|
int nHeight;
|
||
|
|
|
||
|
|
//
|
||
|
|
// get rid of the listbox
|
||
|
|
//
|
||
|
|
if (NULL != ptlb->hlb)
|
||
|
|
{
|
||
|
|
DestroyWindow(ptlb->hlb);
|
||
|
|
|
||
|
|
//
|
||
|
|
// invalidate area where title text was so it will be clean
|
||
|
|
//
|
||
|
|
nHeight = min(ptlb->nFontHeight, ptlb->rc.bottom - ptlb->rc.top);
|
||
|
|
ptlb->rc.bottom = ptlb->rc.top + nHeight;
|
||
|
|
|
||
|
|
hwnd = GetParent(ptlb->hlb);
|
||
|
|
InvalidateRect(hwnd, &ptlb->rc, TRUE);
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// free the memory used for tab stops and title text
|
||
|
|
//
|
||
|
|
if (NULL != ptlb->panTabs)
|
||
|
|
LocalFree((HLOCAL)ptlb->panTabs);
|
||
|
|
|
||
|
|
if (NULL != ptlb->pszTitleText)
|
||
|
|
LocalFree((HLOCAL)ptlb->pszTitleText);
|
||
|
|
}
|
||
|
|
|
||
|
|
LocalFree((HLOCAL)ptlb);
|
||
|
|
|
||
|
|
return (NULL);
|
||
|
|
} // TlbDestroy()
|
||
|
|
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------------;
|
||
|
|
//
|
||
|
|
// PZYZTABBEDLISTBOX TlbCreate
|
||
|
|
//
|
||
|
|
// Description:
|
||
|
|
//
|
||
|
|
//
|
||
|
|
// Arguments:
|
||
|
|
// HWND hwnd:
|
||
|
|
//
|
||
|
|
// int nId:
|
||
|
|
//
|
||
|
|
// PRECT prc:
|
||
|
|
//
|
||
|
|
// Return (PZYZTABBEDLISTBOX):
|
||
|
|
//
|
||
|
|
// History:
|
||
|
|
// 05/16/93
|
||
|
|
//
|
||
|
|
//--------------------------------------------------------------------------;
|
||
|
|
|
||
|
|
PZYZTABBEDLISTBOX FNGLOBAL TlbCreate
|
||
|
|
(
|
||
|
|
HWND hwnd,
|
||
|
|
int nId,
|
||
|
|
PRECT prc
|
||
|
|
)
|
||
|
|
{
|
||
|
|
#define TLB_DEF_STYLE (WS_VISIBLE|WS_CHILD|WS_VSCROLL|WS_BORDER| \
|
||
|
|
LBS_NOTIFY|LBS_NOINTEGRALHEIGHT|LBS_USETABSTOPS)
|
||
|
|
|
||
|
|
static TCHAR szNull[] = TEXT("");
|
||
|
|
static TCHAR szListBox[] = TEXT("ListBox");
|
||
|
|
|
||
|
|
PZYZTABBEDLISTBOX ptlb;
|
||
|
|
HINSTANCE hinst;
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// create a new instance data structure..
|
||
|
|
//
|
||
|
|
ptlb = (PZYZTABBEDLISTBOX)LocalAlloc(LPTR, sizeof(*ptlb));
|
||
|
|
if (NULL == ptlb)
|
||
|
|
return (NULL);
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// create the listbox
|
||
|
|
//
|
||
|
|
hinst = GetWindowInstance(hwnd);
|
||
|
|
|
||
|
|
ptlb->hlb = CreateWindow(szListBox, szNull, TLB_DEF_STYLE,
|
||
|
|
0, 0, 0, 0, hwnd, (HMENU)nId, hinst, NULL);
|
||
|
|
if (NULL == ptlb->hlb)
|
||
|
|
{
|
||
|
|
TlbDestroy(ptlb);
|
||
|
|
return (NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
TlbRecalcTabs(ptlb);
|
||
|
|
|
||
|
|
if (NULL != prc)
|
||
|
|
{
|
||
|
|
ptlb->rc = *prc;
|
||
|
|
TlbMove(ptlb, prc, FALSE);
|
||
|
|
}
|
||
|
|
|
||
|
|
return (ptlb);
|
||
|
|
} // TlbCreate()
|