原文:
WPF实用指南二:移除窗体的图标
WPF没有提供任何功能来移除窗体上的icon图标。一般的做法是设置一个空白的图标,如下图1:
这种做法在窗体边框与标题之间仍然会保留一片空白。比较好的做法是使用Win32API提供的函数来移除这个图标。使用如下的代码:
public static class IconHelper
{
[DllImport("user32.dll")]
static extern int GetWindowLong(IntPtr hwnd, int index);
[DllImport("user32.dll")]
static extern int SetWindowLong(IntPtr hwnd, int index, int newStyle);
[DllImport("user32.dll")]
static extern bool SetWindowPos(IntPtr hwnd, IntPtr hwndInsertAfter,
int x, int y, int width, int height, uint flags);
[DllImport("user32.dll")]
static extern IntPtr SendMessage(IntPtr hwnd, uint msg,
IntPtr wParam, IntPtr lParam);
const int GWL_EXSTYLE = -20;
const int WS_EX_DLGMODALFRAME = 0x0001;
const int SWP_NOSIZE = 0x0001;
const int SWP_NOMOVE = 0x0002;
const int SWP_NOZORDER = 0x0004;
const int SWP_FRAMECHANGED = 0x0020;
const uint WM_SETICON = 0x0080;
public static void RemoveIcon(Window window)
{
//获取窗体的句柄
IntPtr hwnd = new WindowInteropHelper(window).Handle;
//改变窗体的样式
int extendedStyle = GetWindowLong(hwnd, GWL_EXSTYLE);
SetWindowLong(hwnd, GWL_EXSTYLE, extendedStyle | WS_EX_DLGMODALFRAME);
//更新窗口的非客户区,以反映变化
SetWindowPos(hwnd, IntPtr.Zero, 0, 0, 0, 0, SWP_NOMOVE |
SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED);
}
}
在窗体中只需重载OnSourceInitialized函数即可
protected override void OnSourceInitialized(EventArgs e)
{
IconHelper.RemoveIcon(this);
}
效果图:空白没有了。