Application. AddMessage Filter

在 WinForm 中一般采用重写 WndProc 的方法对窗口或控件接受到的指定消息进行处理 示例：禁止通过关闭按钮或其他发送 WM_CLOSE 消息的途径关闭窗口 protected override void WndProc(ref Message m) { const int WM_CLOSE = 0x0010; if(m.Msg == WM_CLOSE) { // MessageBox.Show("禁止关闭此窗口"); return; } base.WndProc(ref m); } Control 类中还有个 DefWndProc 为默认的窗口过程 WPF 仅本机窗口或 HwndHost 嵌入控件拥有句柄，可通过 HwndSource 添加消息处理 示例：禁止通过关闭按钮或其他发送 WM_CLOSE 消息的途径关闭窗口 HwndSource source = null; protected override void OnSourceInitialized(EventArgs e) { base.OnSourceInitialized(e); IntPtr...

Download source file and demo projects - 597.3 KB Download Dlls - 171.3 KB Download demo - 64.5 KB Introduction Sometimes, your form or window (depending on if you're building a WinForm or a WPF application) may need to respond to a hotkey or shortcut (used interchangeably in this article) regardless of if the app is focused or running in the background. Also, if you want to register multiple hotkeys, within and or outside your application, it gets a tad bit difficult.