.net c# winform注册电脑热键

winform 程序经常需要注册一些快捷方式,比如窗体隐藏时,按指定的快捷键显示出来

1.引用系统类库System.Runtime.InteropServices

2.注册系统底层方法

        [DllImport("user32.dll")]
        private static extern int SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);

        [DllImport("user32.dll")]
        private static extern int DefWindowProc(IntPtr hwnd, int wMsg, int wParam, int lParam);

        private const int WM_SETHOTKEY = 0x32;
        private const int WM_SHOWWINDOW = 0x18;
        private const int HK_SHIFTB = 0x142;

3.调用并注册

            //设置热键
            SendMessage(this.Handle, WM_SETHOTKEY, HK_SHIFTB, 0);
            //执行热键
            DefWindowProc(this.Handle, WM_SHOWWINDOW, 0, 0);

当前注册的为按:Shift+b显示窗体

Shift+a 则需要修改成:HK_SHIFTB = 0x141

Shift+f 则需要修改成:HK_SHIFTB = 0x146