Add a way for Win32 to move the GraphicsWindow

only works in windowed (at least I forced it to be that way)

src/RageUtil/Graphics/RageDisplay.cpp

@@ -20,6 +20,10 @@
 #include <chrono>
 #include <thread>
 
+#ifdef _WIN32
+#include "archutils/Win32/GraphicsWindow.h"
+#endif
+
 // Statistics stuff
 auto g_LastCheckTimer = std::chrono::steady_clock::now();
 int g_iNumVerts;
@@ -1364,6 +1368,17 @@ class LunaRageDisplay : public Luna<RageDisplay>
 		lua_pushboolean(L, p->SupportsFullscreenBorderlessWindow());
 		return 1;
 	}
+	static int MoveWindow(T* p, lua_State* L)
+	{
+		bool success = false;
+#ifdef _WIN32
+		int x = IArg(1);
+		int y = IArg(2);
+		success = GraphicsWindow::PushWindow(x, y);
+#endif
+		lua_pushboolean(L, success);
+		return 1;
+	}
 
 	LunaRageDisplay()
 	{
@@ -1376,6 +1391,7 @@ class LunaRageDisplay : public Luna<RageDisplay>
 		ADD_METHOD(GetDisplaySpecs);
 		ADD_METHOD(SupportsRenderToTexture);
 		ADD_METHOD(SupportsFullscreenBorderlessWindow);
+		ADD_METHOD(MoveWindow);
 	}
 };
 

src/archutils/Win32/GraphicsWindow.cpp

@@ -621,6 +621,26 @@ GraphicsWindow::GetDisplaySpecs(DisplaySpecs& out)
 	}
 }
 
+BOOL
+GraphicsWindow::PushWindow(int a, int b)
+{
+	HWND g = GetHwnd();
+
+	if (!g_ActualParams.windowed)
+		return 0;
+
+	RECT r;
+	GetWindowRect(g, &r);
+	// The immediately below is for "Aero Glass"
+	// DwmGetWindowAttribute(g, DWMWA_EXTENDED_FRAME_BOUNDS, &r, sizeof(r));
+
+	int x = r.left + a;
+	int y = r.top + b;
+
+	return SetWindowPos(
+	  g, nullptr, x, y, 0, 0, SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE);
+}
+
 /*
  * (c) 2004 Glenn Maynard
  * All rights reserved.

src/archutils/Win32/GraphicsWindow.h

@@ -38,6 +38,9 @@ DestroyGraphicsWindow();
 void
 GetDisplaySpecs(DisplaySpecs& out);
 
+BOOL
+PushWindow(int a, int b);
+
 ActualVideoModeParams*
 GetParams();