从 WPF 窗口中删除图标 [英] Removing Icon from a WPF window
本文介绍了从 WPF 窗口中删除图标的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我可以使用 WinApi 从 WPF 窗口中删除窗口图标,但是当我只运行 WPF 项目的可执行文件时,我会在应用程序窗口中再次获得该图标.
I am able to remove the window icon from WPF window using WinApi's, however I get the icon again in the application window when I run just the executable of the WPF project.
如何删除图标?
推荐答案
我修改了来自 'LnDCobra' 的示例,因此它可以用作附加属性(如 'Thomas' 建议的那样:
I have modified the sample from 'LnDCobra' so it can be used as an attached property (as 'Thomas' suggested:
<Window
...
xmlns:i="clr-namespace:namespace-to-WindowEx"
i:WindowEx.ShowIcon = "false"
...
>
WindowEx 的实现:
Implementation of WindowEx:
public class WindowEx
{
private const int GwlExstyle = -20;
private const int SwpFramechanged = 0x0020;
private const int SwpNomove = 0x0002;
private const int SwpNosize = 0x0001;
private const int SwpNozorder = 0x0004;
private const int WsExDlgmodalframe = 0x0001;
public static readonly DependencyProperty ShowIconProperty =
DependencyProperty.RegisterAttached(
"ShowIcon",
typeof (bool),
typeof (WindowEx),
new FrameworkPropertyMetadata(true, new PropertyChangedCallback((d, e) => RemoveIcon((Window) d))));
public static Boolean GetShowIcon(UIElement element)
{
return (Boolean) element.GetValue(ShowIconProperty);
}
public static void RemoveIcon(Window window)
{
window.SourceInitialized += delegate {
// Get this window's handle
var hwnd = new WindowInteropHelper(window).Handle;
// Change the extended window style to not show a window icon
int extendedStyle = GetWindowLong(hwnd, GwlExstyle);
SetWindowLong(hwnd, GwlExstyle, extendedStyle | WsExDlgmodalframe);
// Update the window's non-client area to reflect the changes
SetWindowPos(hwnd, IntPtr.Zero, 0, 0, 0, 0, SwpNomove |
SwpNosize | SwpNozorder | SwpFramechanged);
};
}
public static void SetShowIcon(UIElement element, Boolean value)
{
element.SetValue(ShowIconProperty, value);
}
[DllImport("user32.dll")]
private static extern int GetWindowLong(IntPtr hwnd, int index);
[DllImport("user32.dll")]
private static extern IntPtr SendMessage(IntPtr hwnd, uint msg,
IntPtr wParam, IntPtr lParam);
[DllImport("user32.dll")]
private static extern int SetWindowLong(IntPtr hwnd, int index, int newStyle);
[DllImport("user32.dll")]
private static extern bool SetWindowPos(IntPtr hwnd, IntPtr hwndInsertAfter,
int x, int y, int width, int height, uint flags);
}
}
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