Source code of Windows XP (NT5)
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84 lines
1.3 KiB

/*++
Copyright (c) 2000 Microsoft Corporation
Module Name:
Force640x480x8.cpp
Abstract:
This shim is for games that assume the start resolution is 640x480x8.
Notes:
This is a general purpose shim.
History:
01/20/2000 linstev Created
--*/
#include "precomp.h"
IMPLEMENT_SHIM_BEGIN(Force640x480x8)
#include "ShimHookMacro.h"
APIHOOK_ENUM_BEGIN
APIHOOK_ENUM_END
#define CDS_WIDTH 640
#define CDS_HEIGHT 480
#define CDS_BITS 8
VOID
ChangeMode()
{
DEVMODEA dm;
__try {
EnumDisplaySettingsA(NULL, ENUM_CURRENT_SETTINGS, &dm);
if ((dm.dmPelsWidth != CDS_WIDTH) ||
(dm.dmPelsHeight != CDS_HEIGHT) ||
(dm.dmBitsPerPel != CDS_BITS)) {
//
// The mode is different, so change
//
dm.dmPelsWidth = CDS_WIDTH;
dm.dmPelsHeight = CDS_HEIGHT;
dm.dmBitsPerPel = CDS_BITS;
ChangeDisplaySettingsA(&dm, CDS_FULLSCREEN);
}
}
__except(1) {
DPFN( eDbgLevelWarning, "Exception trying to change mode");
};
}
/*++
Register hooked functions
--*/
BOOL
NOTIFY_FUNCTION(
DWORD fdwReason)
{
if (fdwReason == SHIM_STATIC_DLLS_INITIALIZED) {
ChangeMode();
}
return TRUE;
}
HOOK_BEGIN
CALL_NOTIFY_FUNCTION
HOOK_END
IMPLEMENT_SHIM_END