[英]WPF Bluring main form when showing dialogs
所以我在主要形式的主網格上添加了模糊效果:
<Grid.Effect>
<BlurEffect x:Name="MainGridBlur" Radius="0" KernelType="Gaussian"/>
</Grid.Effect>
並添加了用於在主窗體上打開對話框的自定義方法:
public Window CreateDialogWindow(Window window)
{
window.Owner = this;
window.WindowStartupLocation = WindowStartupLocation.CenterOwner;
MainGridBlur.Radius = 10;
window.ShowDialog();
MainGridBlur.Radius = 0;
return window;
}
這是我在創建對話框時從其他形式調用此方法的方式:
((MainWindow)Application.Current.MainWindow).CreateDialogWindow(new SomeDialog());
我的問題是,有什么更好的方法嗎?
好的,這個答案太遲了,但是總比沒有好,對吧? 我設法通過捕獲WndProc消息WM_SETFOCUS和WM_KILLFOCUS並在WM_KILLFOCUS上模糊化表單並在WM_SETFOCUS上消除模糊(??)來做到這一點。
using System.Windows.Interop;
protected override void OnSourceInitialized(EventArgs e)
{
base.OnSourceInitialized(e);
HwndSource source = PresentationSource.FromVisual(this) as HwndSource;
source.AddHook(WndProc);
}
private IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
switch (msg)
{
case 8: //WM_KILLFOCUS
MainGridBlur.Radius = 10;
break;
case 7: //WM_SETFOCUS
MainGridBlur.Radius = 0;
break;
}
return IntPtr.Zero;
}
希望這對某人有幫助。
編輯。 我只是意識到我可以使用Got / LostKeyboardFocus事件來實現相同的功能,下面是一個示例:
private void Main_GotKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
{
MainGridBlur.Radius = 0;
}
private void Main_LostKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e)
{
MainGridBlur.Radius = 10;
}
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