[英]Using WM_Close in c#
我正在使用以下代碼通過在任務欄中搜索窗口名稱來關閉窗口。 但在一種情況下,我的窗口將不會出現在任務欄中。 在這種情況下, WM_Close
無法關閉窗口。 使用WM_Close
的另一種方法是什么?
void DaemonTerminamtionHook_KeyPressed(object sender, KeyPressedEventArgs e)
{
DaemonResult = MessageBox.Show("Are you sure, you want to Terminate Daemon?", "Terminate Daemon", MessageBoxButtons.YesNo, MessageBoxIcon.Exclamation);
if (DaemonResult == DialogResult.Yes)
{
//Free the resources of ShellBasics and terminate Daemon here.
IntPtr hWnd = FindWindowByCaption(IntPtr.Zero, "DAEMON TAB BAR");
bool ret = CloseWindow(hWnd);
}
}
//WM_Close
[DllImport("user32.dll", EntryPoint = "FindWindow", SetLastError = true)]
static extern IntPtr FindWindowByCaption(IntPtr ZeroOnly, string lpWindowName);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
static extern IntPtr SendMessage(IntPtr hWnd, UInt32 Msg, IntPtr wParam, IntPtr lParam);
static uint WM_CLOSE = 0x10;
static bool CloseWindow(IntPtr hWnd)
{
SendMessage(hWnd, WM_CLOSE, IntPtr.Zero, IntPtr.Zero);
return true;
}
現在使用以下代碼...但是出現錯誤
“ IntPtr hWnd = PostMessage(IntPtr.Zero,WM_CLOSE,IntPtr.Zero,IntPtr.Zero);”
在哪里提供窗口名稱以關閉該窗口?
void DaemonTerminamtionHook_KeyPressed(object sender, KeyPressedEventArgs e)
{
DaemonResult = MessageBox.Show("Are you sure, you want to Terminate Daemon?", "Terminate Daemon", MessageBoxButtons.YesNo, MessageBoxIcon.Exclamation);
if (DaemonResult == DialogResult.Yes)
{
IntPtr hWnd = PostMessage(IntPtr.Zero, WM_CLOSE, IntPtr.Zero, IntPtr.Zero);
bool ret = CloseWindow(hWnd);
}
}
static uint WM_CLOSE = 0x10;
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("user32.dll", SetLastError = true)]
static extern bool PostMessage(IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam);
static bool CloseWindow(IntPtr hWnd)
{
bool returnValue = PostMessage(hWnd, WM_CLOSE, IntPtr.Zero, IntPtr.Zero);
if (!returnValue)
throw new Win32Exception(Marshal.GetLastWin32Error());
return true;
}
編輯:很抱歉誤讀了您的問題。
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