Now, when you press Alt+Win, the window becomes transparent.

Xottab-DUTY · Xottab-DUTY · commit c6bbc9c866a6 · 2018-08-05T23:10:59.000+05:00
diff --git a/src/xrGame/MainMenu.cpp b/src/xrGame/MainMenu.cpp
@@ -350,6 +350,7 @@ void CMainMenu::IR_OnKeyboardPress(int dik)
     {
         IWantMyMouseBackScreamed = true;
         pInput->GrabInput(false);
+        SDL_SetWindowOpacity(Device.m_sdlWnd, 0.9f);
     }
 
     if (SDL_SCANCODE_F12 == dik)
@@ -370,6 +371,7 @@ void CMainMenu::IR_OnKeyboardRelease(int dik)
     {
         IWantMyMouseBackScreamed = false;
         pInput->GrabInput(true);
+        SDL_SetWindowOpacity(Device.m_sdlWnd, 1.f);
     }
 
 

Original file line number	Diff line number	Diff line change
`@@ -350,6 +350,7 @@ void CMainMenu::IR_OnKeyboardPress(int dik)`
`350`	`350`	`{`
`351`	`351`	`IWantMyMouseBackScreamed = true;`
`352`	`352`	`pInput->GrabInput(false);`
	`353`	`+ SDL_SetWindowOpacity(Device.m_sdlWnd, 0.9f);`
`353`	`354`	`}`
`354`	`355`
`355`	`356`	`if (SDL_SCANCODE_F12 == dik)`
`@@ -370,6 +371,7 @@ void CMainMenu::IR_OnKeyboardRelease(int dik)`
`370`	`371`	`{`
`371`	`372`	`IWantMyMouseBackScreamed = false;`
`372`	`373`	`pInput->GrabInput(true);`
	`374`	`+ SDL_SetWindowOpacity(Device.m_sdlWnd, 1.f);`
`373`	`375`	`}`
`374`	`376`
`375`	`377`