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