Initial commit for GitHub migration based on spice2x-25-03-03

src/spice2x/hooks/winuser.cpp

@@ -0,0 +1,23 @@
+#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);
+}