330 lines
7.8 KiB
C
330 lines
7.8 KiB
C
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/*************************************************************************
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**
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** OLE 2 Sample Code
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**
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** debug2.c
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**
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** This file contains various debug / subclass routines for the
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** ABOUT dialog
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**
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** (c) Copyright Microsoft Corp. 1992 - 1993 All Rights Reserved
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**
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*************************************************************************/
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#include "outline.h"
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#include <stdlib.h>
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#include <time.h>
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extern LPOUTLINEAPP g_lpApp;
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LONG CALLBACK EXPORT DebugAbout(HWND hWnd, unsigned uMsg, WORD wParam, LONG lParam);
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void RandomizeStars(HDC hDC);
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BOOL InitStrings(void);
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BOOL DrawString(int iCount, HDC hDC, LPRECT rcDrawIn);
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static FARPROC lpRealAboutProc = 0L;
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static int width, height;
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static RECT rc;
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static HANDLE hStrBlock = NULL;
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static LPSTR lpStrings = NULL;
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static WORD wLineHeight;
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/* TraceDebug
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* ----------
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*
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* Called once when our About Box's gets the INITDIALOG message. Subclasses
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* dialog.
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*/
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void TraceDebug(HWND hDlg, int iControl)
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{
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// Load strings, if the strings aren't there, then don't subclass
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// the dialog
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if (InitStrings() != TRUE)
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return;
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// Subclass the dialog
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lpRealAboutProc = (FARPROC)(LONG_PTR)GetWindowLongPtr(hDlg, GWLP_WNDPROC);
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SetWindowLongPtr(hDlg, GWLP_WNDPROC, (LONG_PTR)(FARPROC)DebugAbout);
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// Get rect of control in screen coords, and translate to our dialog
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// box's coordinates
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GetWindowRect(GetDlgItem(hDlg, iControl), &rc);
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MapWindowPoints(NULL, hDlg, (LPPOINT)&rc, 2);
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width = rc.right - rc.left;
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height = rc.bottom - rc.top;
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}
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/* DebugAbout
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* ----------
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*
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* The subclassed About dialog's main window proc.
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*/
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LONG CALLBACK EXPORT DebugAbout(HWND hWnd, unsigned uMsg, WORD wParam, LONG lParam)
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{
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RECT rcOut;
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static BOOL bTimerStarted = FALSE;
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static int iTopLocation;
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HDC hDCScr;
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static HDC hDCMem;
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static HBITMAP hBitmap;
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static HBITMAP hBitmapOld;
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static RECT rcMem;
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static HFONT hFont;
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switch (uMsg)
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{
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/*
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* If we get a LBUTTONDBLCLICK in the upper left of
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* the dialog, fire off the about box effects
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*/
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case WM_LBUTTONDBLCLK:
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if ((wParam & MK_CONTROL) && (wParam & MK_SHIFT)
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&& LOWORD(lParam) < 10 && HIWORD(lParam) < 10 &&
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bTimerStarted == FALSE)
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{
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if (SetTimer ( hWnd, 1, 10, NULL ))
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{
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LOGFONT lf;
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int i;
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bTimerStarted = TRUE;
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// "Open up" the window
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hDCScr = GetDC ( hWnd );
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hDCMem = CreateCompatibleDC ( hDCScr );
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hBitmap = CreateCompatibleBitmap(hDCScr, width, height);
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hBitmapOld = SelectObject(hDCMem, hBitmap);
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// Blt from dialog to memDC
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BitBlt(hDCMem, 0, 0, width, height,
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hDCScr, rc.left, rc.top, SRCCOPY);
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for (i=0;i<height;i+=1)
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{
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BitBlt(hDCScr, rc.left, rc.top + i + 1, width, height-i-1, hDCMem, 0, 0, SRCCOPY);
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PatBlt(hDCScr, rc.left, rc.top + i, width, 1, BLACKNESS);
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}
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SelectObject(hDCMem, hBitmapOld);
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DeleteObject(hBitmap);
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// Set up memory DC with default attributes
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hBitmap = CreateCompatibleBitmap(hDCScr, width, height);
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ReleaseDC(hWnd, hDCScr);
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hBitmapOld = SelectObject(hDCMem, hBitmap);
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SetBkMode(hDCMem, TRANSPARENT);
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SetBkColor(hDCMem, RGB(0,0,0));
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// Create font
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memset(&lf, 0, sizeof(LOGFONT));
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lf.lfHeight = -(height / 7); // Fit 7 lines of text in box
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lf.lfWeight = FW_BOLD;
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strcpy(lf.lfFaceName, "Arial");
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hFont = CreateFontIndirect(&lf);
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// If we can't create the font, revert and use the standard
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// system font.
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if (!hFont)
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GetObject(GetStockObject(SYSTEM_FONT), sizeof(LOGFONT), &lf);
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wLineHeight = abs(lf.lfHeight) + 5; // 5 pixels between lines
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// Set location of top of banner at bottom of the window
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iTopLocation = height + 50;
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SetRect(&rcMem, 0, 0, width, height);
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}
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}
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// Call our real window procedure in case they want to
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// handle LBUTTONDOWN messages also
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goto Default;
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case WM_TIMER:
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{
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int iCount;
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HFONT hfold;
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/*
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* On each timer message, we are going to construct the next image
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* in the animation sequence, then bitblt this to our dialog.
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*/
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// Clear out old bitmap and place random star image on background
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PatBlt(hDCMem, rcMem.left, rcMem.top, rcMem.right, rcMem.bottom, BLACKNESS);
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RandomizeStars(hDCMem);
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// Set initial location to draw text
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rcOut = rcMem;
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rcOut.top = 0 + iTopLocation;
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rcOut.bottom = rcOut.top + wLineHeight;
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iCount = 0;
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if (hFont) hfold = SelectObject(hDCMem, hFont);
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SetTextColor(hDCMem, RGB(0,255,0));
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while (DrawString(iCount, hDCMem, &rcOut) == TRUE)
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{
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rcOut.top += wLineHeight;
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rcOut.bottom += wLineHeight;
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iCount++;
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}
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if (hFont) SelectObject(hDCMem, hfold);
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// Now blt the memory dc that we have just constructed
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// to the screen
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hDCScr = GetDC(hWnd);
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BitBlt(hDCScr, rc.left, rc.top, rc.right, rc.bottom,
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hDCMem, 0, 0, SRCCOPY);
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ReleaseDC(hWnd, hDCScr);
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// For the next animation sequence, we want to move the
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// whole thing up, so decrement the location of the top
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// of the banner
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iTopLocation -= 2;
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// If we've gone through the banner once, reset it
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if (iTopLocation < -(int)(wLineHeight * iCount))
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iTopLocation = height + 50;
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}
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// Goto default
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goto Default;
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case WM_NCDESTROY:
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{
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LONG defReturn;
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/*
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* We're being destroyed. Clean up what we created.
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*/
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if (bTimerStarted)
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{
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KillTimer(hWnd, 1);
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SelectObject (hDCMem, hBitmapOld);
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DeleteObject (hBitmap);
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DeleteDC (hDCMem);
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if (hFont) DeleteObject(hFont);
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bTimerStarted = FALSE;
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}
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if (lpStrings)
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UnlockResource(hStrBlock), lpStrings = NULL;
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if (hStrBlock)
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FreeResource(hStrBlock), hStrBlock = NULL;
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// Pass the NCDESTROY on to our real window procedure. Since
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// this is the last message that we are going to be getting,
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// we can go ahead and free the proc instance here.
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defReturn = CallWindowProc((WNDPROC)lpRealAboutProc, hWnd,
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uMsg, wParam, lParam);
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return defReturn;
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}
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Default:
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default:
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return CallWindowProc(
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(WNDPROC)lpRealAboutProc, hWnd, uMsg, wParam, lParam);
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}
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return 0L;
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}
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/* RandomizeStars
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* --------------
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*
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* Paints random stars on the specified hDC
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*
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*/
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void RandomizeStars(HDC hDC)
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{
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int i;
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// Seed the random number generator with current time. This will,
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// in effect, only change the seed every second, so our
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// starfield will change only every second.
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srand((unsigned)time(NULL));
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// Generate random white stars
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for (i=0;i<20;i++)
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PatBlt(hDC, getrandom(0,width), getrandom(0,height), 2, 2, WHITENESS);
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}
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/* InitStrings
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* --------------
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*
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* Reads strings from stringtable. Returns TRUE if it worked OK.
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*
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*/
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BOOL InitStrings()
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{
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HRSRC hResStrings;
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LPSTR lpWalk;
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// Load the block of strings
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if ((hResStrings = FindResource(
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g_lpApp->m_hInst,
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MAKEINTRESOURCE(9999),
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RT_RCDATA)) == NULL)
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return FALSE;
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if ((hStrBlock = LoadResource(g_lpApp->m_hInst, hResStrings)) == NULL)
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return FALSE;
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if ((lpStrings = LockResource(hStrBlock)) == NULL)
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return FALSE;
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if (lpStrings && *(lpStrings+2)!=0x45)
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{
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lpWalk = lpStrings;
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while (*(LPWORD)lpWalk != (WORD)0x0000)
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{
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if (*lpWalk != (char)0x00)
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*lpWalk ^= 0x98;
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lpWalk++;
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}
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}
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return TRUE;
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}
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/* DrawString
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* ----------
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*
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* Draws the next string on the specified hDC using the
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* output rectangle. If iCount == 0, reset to start of list.
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*
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* Returns: TRUE to contine, FALSE if we're done
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*/
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BOOL DrawString(int iCount, HDC hDC, LPRECT rcDrawIn)
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{
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static LPSTR lpPtr = NULL;
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if (iCount == 0)
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// First time, reset pointer
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lpPtr = lpStrings;
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if (*lpPtr == '\0') // If we've hit a NULL string, we're done
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return FALSE;
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// If we're drawing outside of visible box, don't call DrawText
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if ((rcDrawIn->bottom > 0) && (rcDrawIn->top < height))
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DrawText(hDC, lpPtr, -1, rcDrawIn, DT_CENTER);
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// Advance pointer to next string
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lpPtr += lstrlen(lpPtr) + 1;
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return TRUE;
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}
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