Win32 - Apply extend client state when window visibility changes (#15566)

* win32 - apply extend client state when window visibility changes * only apply extend client if window is extended.
2 years ago · 334a8f7d0c
1 changed files with 5 additions and 0 deletions
--- a/src/Windows/Avalonia.Win32/WindowImpl.AppWndProc.cs
+++ b/src/Windows/Avalonia.Win32/WindowImpl.AppWndProc.cs
@ -611,6 +611,11 @@ namespace Avalonia.Win32

                case WindowsMessage.WM_SHOWWINDOW:
                    _shown = wParam != default;
+
+                    if (_isClientAreaExtended)
+                    {
+                        ExtendClientArea();
+                    }
                    break;

                case WindowsMessage.WM_SIZE: