Potential fix for the re-introduced window crash by not executing anything on the window right after creation

Author: dclamage

SimpleGraphic.sln

@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
-VisualStudioVersion = 15.0.28307.960
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.30907.101
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "SimpleGraphic", "SimpleGraphic.vcxproj", "{62A6B2C3-84CC-49CC-BAD7-DD0A4BFE05CB}"
 EndProject

engine/system/win/sys_video.cpp

@@ -238,7 +238,10 @@ int sys_video_c::Apply(sys_vidSet_s* set)
 		}
 	} else {
 		if (cur.shown) {
-			style|= WS_VISIBLE;
+			style |= WS_VISIBLE;
+		}
+		if (cur.flags & VID_MAXIMIZE) {
+			style |= WS_MAXIMIZE;
 		}
 		hwnd = CreateWindowEx(
 			exStyle, CFG_TITLE " Class", curTitle, style,
@@ -247,9 +250,9 @@ int sys_video_c::Apply(sys_vidSet_s* set)
 		);
 		if (hwnd == NULL) {
 			sys->Error("Unable to create window");
+			return 0;
 		}
 		SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)sys);
-		sys->conWin->SetForeground();
 	}
 
 	// Calculate minimum size
@@ -264,7 +267,7 @@ int sys_video_c::Apply(sys_vidSet_s* set)
 		minSize[1] = rec.bottom - rec.top;
 	}
 
-	if (cur.flags & VID_MAXIMIZE) {
+	if (initialised && (cur.flags & VID_MAXIMIZE)) {
 		ShowWindow(hwnd, SW_MAXIMIZE);
 	}