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#39 hook GetDeviceCaps - fixes graphcial glitches for Megaman X4

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FunkyFr3sh 2020-09-17 05:49:36 +02:00
parent bbd67907c0
commit 4e6ecfe37c
4 changed files with 16 additions and 0 deletions
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2
inc/hook.h
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@ -23,6 +23,7 @@ typedef LONG (WINAPI* SETWINDOWLONGAPROC)(HWND, int, LONG);
typedef BOOL (WINAPI* ENABLEWINDOWPROC)(HWND, BOOL); typedef BOOL (WINAPI* ENABLEWINDOWPROC)(HWND, BOOL);
typedef HWND (WINAPI* CREATEWINDOWEXAPROC)(DWORD, LPCSTR, LPCSTR, DWORD, int, int, int, int, HWND, HMENU, HINSTANCE, LPVOID); typedef HWND (WINAPI* CREATEWINDOWEXAPROC)(DWORD, LPCSTR, LPCSTR, DWORD, int, int, int, int, HWND, HMENU, HINSTANCE, LPVOID);
typedef BOOL (WINAPI* DESTROYWINDOWPROC)(HWND); typedef BOOL (WINAPI* DESTROYWINDOWPROC)(HWND);
typedef BOOL(WINAPI* GETDEVICECAPSPROC)(HDC, int);
extern GETCURSORPOSPROC real_GetCursorPos; extern GETCURSORPOSPROC real_GetCursorPos;
extern CLIPCURSORPROC real_ClipCursor; extern CLIPCURSORPROC real_ClipCursor;
@ -44,6 +45,7 @@ extern SETWINDOWLONGAPROC real_SetWindowLongA;
extern ENABLEWINDOWPROC real_EnableWindow; extern ENABLEWINDOWPROC real_EnableWindow;
extern CREATEWINDOWEXAPROC real_CreateWindowExA; extern CREATEWINDOWEXAPROC real_CreateWindowExA;
extern DESTROYWINDOWPROC real_DestroyWindow; extern DESTROYWINDOWPROC real_DestroyWindow;
extern GETDEVICECAPSPROC real_GetDeviceCaps;
extern int HookingMethod; extern int HookingMethod;
extern BOOL Hook_Active; extern BOOL Hook_Active;

1
inc/mouse.h
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@ -25,6 +25,7 @@ LRESULT WINAPI fake_SendMessageA(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lPar
LONG WINAPI fake_SetWindowLongA(HWND hWnd, int nIndex, LONG dwNewLong); LONG WINAPI fake_SetWindowLongA(HWND hWnd, int nIndex, LONG dwNewLong);
BOOL WINAPI fake_EnableWindow(HWND hWnd, BOOL bEnable); BOOL WINAPI fake_EnableWindow(HWND hWnd, BOOL bEnable);
BOOL WINAPI fake_DestroyWindow(HWND hWnd); BOOL WINAPI fake_DestroyWindow(HWND hWnd);
int WINAPI fake_GetDeviceCaps(HDC hdc, int index);
HWND WINAPI fake_CreateWindowExA( HWND WINAPI fake_CreateWindowExA(
DWORD dwExStyle, LPCSTR lpClassName, LPCSTR lpWindowName, DWORD dwStyle, int X, int Y, DWORD dwExStyle, LPCSTR lpClassName, LPCSTR lpWindowName, DWORD dwStyle, int X, int Y,
int nWidth, int nHeight, HWND hWndParent, HMENU hMenu, HINSTANCE hInstance, LPVOID lpParam); int nWidth, int nHeight, HWND hWndParent, HMENU hMenu, HINSTANCE hInstance, LPVOID lpParam);

3
src/hook.c
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@ -30,6 +30,7 @@ SETWINDOWLONGAPROC real_SetWindowLongA = SetWindowLongA;
ENABLEWINDOWPROC real_EnableWindow = EnableWindow; ENABLEWINDOWPROC real_EnableWindow = EnableWindow;
CREATEWINDOWEXAPROC real_CreateWindowExA = CreateWindowExA; CREATEWINDOWEXAPROC real_CreateWindowExA = CreateWindowExA;
DESTROYWINDOWPROC real_DestroyWindow = DestroyWindow; DESTROYWINDOWPROC real_DestroyWindow = DestroyWindow;
GETDEVICECAPSPROC real_GetDeviceCaps = GetDeviceCaps;
void Hook_PatchIAT(HMODULE hMod, char *moduleName, char *functionName, PROC newFunction) void Hook_PatchIAT(HMODULE hMod, char *moduleName, char *functionName, PROC newFunction)
@ -164,6 +165,7 @@ void Hook_Init()
Hook_Create("user32.dll", "EnableWindow", (PROC)fake_EnableWindow, (PROC *)&real_EnableWindow); Hook_Create("user32.dll", "EnableWindow", (PROC)fake_EnableWindow, (PROC *)&real_EnableWindow);
Hook_Create("user32.dll", "CreateWindowExA", (PROC)fake_CreateWindowExA, (PROC *)&real_CreateWindowExA); Hook_Create("user32.dll", "CreateWindowExA", (PROC)fake_CreateWindowExA, (PROC *)&real_CreateWindowExA);
Hook_Create("user32.dll", "DestroyWindow", (PROC)fake_DestroyWindow, (PROC *)&real_DestroyWindow); Hook_Create("user32.dll", "DestroyWindow", (PROC)fake_DestroyWindow, (PROC *)&real_DestroyWindow);
Hook_Create("gdi.dll", "GetDeviceCaps ", (PROC)fake_GetDeviceCaps, (PROC*)&real_GetDeviceCaps);
} }
} }
@ -193,5 +195,6 @@ void Hook_Exit()
Hook_Revert("user32.dll", "EnableWindow", (PROC)fake_EnableWindow, (PROC *)&real_EnableWindow); Hook_Revert("user32.dll", "EnableWindow", (PROC)fake_EnableWindow, (PROC *)&real_EnableWindow);
Hook_Revert("user32.dll", "CreateWindowExA", (PROC)fake_CreateWindowExA, (PROC *)&real_CreateWindowExA); Hook_Revert("user32.dll", "CreateWindowExA", (PROC)fake_CreateWindowExA, (PROC *)&real_CreateWindowExA);
Hook_Revert("user32.dll", "DestroyWindow", (PROC)fake_DestroyWindow, (PROC *)&real_DestroyWindow); Hook_Revert("user32.dll", "DestroyWindow", (PROC)fake_DestroyWindow, (PROC *)&real_DestroyWindow);
Hook_Revert("gdi.dll", "GetDeviceCaps", (PROC)fake_GetDeviceCaps, (PROC*)&real_GetDeviceCaps);
} }
} }

10
src/mouse.c
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@ -422,6 +422,16 @@ BOOL WINAPI fake_EnableWindow(HWND hWnd, BOOL bEnable)
return real_EnableWindow(hWnd, bEnable); return real_EnableWindow(hWnd, bEnable);
} }
int WINAPI fake_GetDeviceCaps(HDC hdc, int index)
{
if (ddraw && ddraw->bpp && index == BITSPIXEL)
{
return ddraw->bpp;
}
return real_GetDeviceCaps(hdc, index);
}
BOOL WINAPI fake_DestroyWindow(HWND hWnd) BOOL WINAPI fake_DestroyWindow(HWND hWnd)
{ {
BOOL result = real_DestroyWindow(hWnd); BOOL result = real_DestroyWindow(hWnd);