spicetools/hooks/winuser.cpp

24 lines
883 B
C++

#include "winuser.h"
#include "util/detour.h"
#include "util/logging.h"
// hooks to prevent display scaling changes (e.g., SDVX)
static decltype(DisplayConfigSetDeviceInfo) *DisplayConfigSetDeviceInfo_real = nullptr;
static LONG WINAPI DisplayConfigSetDeviceInfo_hook(DISPLAYCONFIG_DEVICE_INFO_HEADER *setPacket) {
// seems to be using some undocumented API to change the monitor scaling (type == -4)
if (setPacket && setPacket->type == 0xFFFFFFFC) {
log_misc("winuser", "DisplayConfigSetDeviceInfo_hook: ignoring request to change monitor scaling");
return ERROR_SUCCESS;
}
return DisplayConfigSetDeviceInfo_real(setPacket);
}
void winuser_hook_init(HMODULE module) {
log_info("winuser", "initializing");
DisplayConfigSetDeviceInfo_real =
detour::iat_try("DisplayConfigSetDeviceInfo", DisplayConfigSetDeviceInfo_hook, module);
}