(#17) Handling of possible value for

Simon Hofmann · Simon Hofmann · commit 63b74a75c67d · 2020-08-10T15:21:34.000+02:00
diff --git a/src/win32/window_manager.cc b/src/win32/window_manager.cc
@@ -18,7 +18,11 @@ std::vector<WindowHandle> getWindows() {
 }
 
 WindowHandle getActiveWindow() {
-    return reinterpret_cast<WindowHandle>(GetForegroundWindow());
+    HWND foregroundWindow = GetForegroundWindow();
+    if (foregroundWindow != NULL) {
+        return reinterpret_cast<WindowHandle>(foregroundWindow);
+    }
+    return -1;
 }
 
 MMRect getWindowRect(const WindowHandle windowHandle) {

Original file line number	Diff line number	Diff line change
`@@ -18,7 +18,11 @@ std::vector<WindowHandle> getWindows() {`
`18`	`18`	`}`
`19`	`19`
`20`	`20`	`WindowHandle getActiveWindow() {`
`21`		`- return reinterpret_cast<WindowHandle>(GetForegroundWindow());`
	`21`	`+ HWND foregroundWindow = GetForegroundWindow();`
	`22`	`+ if (foregroundWindow != NULL) {`
	`23`	`+ return reinterpret_cast<WindowHandle>(foregroundWindow);`
	`24`	`+ }`
	`25`	`+ return -1;`
`22`	`26`	`}`
`23`	`27`
`24`	`28`	`MMRect getWindowRect(const WindowHandle windowHandle) {`