Only show window behaviour when it is visible (#126)

winuser::ShowWindow will show the window and make set_visible(false) obsolete.

.changes/windows-hidden.md

@@ -0,0 +1,5 @@
+---
+"tao": patch
+---
+
+Only show window behaviour when it is visible. winuser::ShowWindow will show the window and make with_visible(false) obsolete.

examples/multiwindow.rs

@@ -40,7 +40,7 @@ fn main() {
         }
         WindowEvent::KeyboardInput {
           event: KeyEvent {
-            state: ElementState::Released,
+            state: ElementState::Pressed,
             ..
           },
           ..

src/platform_impl/windows/util.rs

@@ -214,13 +214,15 @@ pub fn is_maximized(window: HWND) -> bool {
 
 pub fn set_maximized(window: HWND, maximized: bool) {
   unsafe {
-    winuser::ShowWindow(
-      window,
-      match maximized {
-        true => winuser::SW_MAXIMIZE,
-        false => winuser::SW_RESTORE,
-      },
-    );
+    if winuser::IsWindowVisible(window) != 0 {
+      winuser::ShowWindow(
+        window,
+        match maximized {
+          true => winuser::SW_MAXIMIZE,
+          false => winuser::SW_RESTORE,
+        },
+      );
+    }
   }
 }