176 lines
3.6 KiB
C++
176 lines
3.6 KiB
C++
/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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DinosaurActivityCenter.cpp
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Abstract:
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The app doesn't handle the WM_PAINT messages so when you drag the "Save As"
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dialog box, the main window doesn't redraw.
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We fix this by capturing the static image of the main window into a
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memory DC and blit from it when the WM_PAINT messages arrive (the
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image under the dialog doesn't change).
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Notes:
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This is an app specific shim.
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History:
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09/21/2000 maonis Created
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11/29/2000 andyseti Converted into AppSpecific shim.
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--*/
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#include "precomp.h"
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static HWND g_hwndOwner;
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static HDC g_hdcMemory;
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static RECT g_rect;
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IMPLEMENT_SHIM_BEGIN(DinosaurActivityCenter)
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#include "ShimHookMacro.h"
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APIHOOK_ENUM_BEGIN
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APIHOOK_ENUM_ENTRY(RegisterClassExA)
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APIHOOK_ENUM_ENTRY(GetSaveFileNameA)
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APIHOOK_ENUM_END
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BOOL
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APIHOOK(GetSaveFileNameA)(
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LPOPENFILENAMEA lpofn
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)
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{
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BOOL fRet;
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HDC hdcWindow = NULL;
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HBITMAP hbmMemory = NULL;
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HBITMAP hbmOld = NULL;
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HWND hwndOwner = lpofn->hwndOwner;
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DPFN( eDbgLevelInfo, "GetSaveFileNameA called with hwnd = 0x%x.", hwndOwner);
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if (hdcWindow = GetDC(hwndOwner))
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{
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if ((g_hdcMemory = CreateCompatibleDC(hdcWindow)) &&
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GetWindowRect(hwndOwner, &g_rect) &&
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(hbmMemory = CreateCompatibleBitmap(hdcWindow, g_rect.right, g_rect.bottom)) &&
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(hbmOld = (HBITMAP)SelectObject(g_hdcMemory, hbmMemory)) &&
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BitBlt(g_hdcMemory, 0, 0, g_rect.right, g_rect.bottom, hdcWindow, 0, 0, SRCCOPY))
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{
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g_hwndOwner = hwndOwner;
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}
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else
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{
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DPFN( eDbgLevelError, "GetSaveFileName(hwnd = 0x%x): Error creating bitmap", hwndOwner);
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}
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ReleaseDC(hwndOwner, hdcWindow);
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}
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fRet = ORIGINAL_API(GetSaveFileNameA)(lpofn);
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g_hwndOwner = NULL;
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if (g_hdcMemory)
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{
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if (hbmMemory)
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{
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if (hbmOld)
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{
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SelectObject(g_hdcMemory, hbmOld);
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}
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DeleteObject(hbmMemory);
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}
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DeleteDC(g_hdcMemory);
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}
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return fRet;
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}
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/*++
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Validate after paint and filter syskey messages.
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--*/
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LRESULT
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CALLBACK
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DinosaurActivityCenter_WindowProcHook(
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WNDPROC pfnOld,
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HWND hwnd,
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UINT uMsg,
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WPARAM wParam,
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LPARAM lParam
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)
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{
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if (hwnd == g_hwndOwner)
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{
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if (uMsg == WM_PAINT)
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{
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PAINTSTRUCT ps;
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HDC hdcWindow;
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if (hdcWindow = BeginPaint(hwnd, &ps))
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{
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BitBlt(hdcWindow, 0, 0, g_rect.right, g_rect.bottom, g_hdcMemory, 0, 0, SRCCOPY);
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EndPaint(hwnd, &ps);
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}
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LOGN( eDbgLevelError, "hwnd = 0x%x: Paint to the screen", hwnd);
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}
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}
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return (*pfnOld)(hwnd, uMsg, wParam, lParam);
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}
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/*++
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Hook the wndproc
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--*/
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ATOM
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APIHOOK(RegisterClassExA)(
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CONST WNDCLASSEXA *lpwcx
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)
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{
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CSTRING_TRY
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{
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CString csClassName(lpwcx->lpszClassName);
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if (csClassName.CompareNoCase(L"GAMEAPP") == 0)
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{
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WNDCLASSEXA wcNewWndClass = *lpwcx;
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wcNewWndClass.lpfnWndProc =
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(WNDPROC) HookCallback(lpwcx->lpfnWndProc, DinosaurActivityCenter_WindowProcHook);
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return ORIGINAL_API(RegisterClassExA)(&wcNewWndClass);
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}
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}
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CSTRING_CATCH
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{
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// Do Nothing
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}
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return ORIGINAL_API(RegisterClassExA)(lpwcx);
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}
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/*++
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Register hooked functions
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--*/
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HOOK_BEGIN
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APIHOOK_ENTRY(USER32.DLL, RegisterClassExA)
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APIHOOK_ENTRY(COMDLG32.DLL, GetSaveFileNameA)
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HOOK_END
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IMPLEMENT_SHIM_END
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