0

我已经签出:

SetWindowPos 不适用于 Form.Show()

启动应用程序并将其发送到第二台显示器?

但是,这些解决方案似乎都不适合我。我想在不同的显示器上打开一个外部程序。

这是我当前的代码:

 public const int SWP_NOSIZE = 0x0001;
 public const int SWP_NOZORDER = 0x0004;
 public const int SWP_SHOWWINDOW = 0x0040;

 [DllImport("user32.dll", SetLastError = true)]
 public static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, int uFlags);


 [DllImport("user32.dll")]
 public static extern bool UpdateWindow(IntPtr hWnd);


 Process application = new Process();
 application.StartInfo.UseShellExecute = false;
 application.StartInfo.FileName = ".......";
 if (application.Start())
 {
     Rectangle monitor = Screen.AllScreens[1].Bounds; // for monitor no 2

     SetWindowPos(
         application.MainWindowHandle,
         IntPtr.Zero,
         monitor.Left,
         monitor.Top,
         monitor.Width,
         monitor.Height,
         SWP_NOZORDER | SWP_NOSIZE | SWP_SHOWWINDOW);
                
     UpdateWindow(application.MainWindowHandle); // tried even with application.Handle
 }
4

1 回答 1

1

首先,你不需要UpdateWindow,调用SetWindowPos可能就足够了。您只需要确保创建了窗口句柄(因为正在启动该进程)。只需在调用之前添加以下行SetWindowPos

application.WaitForInputIdle();

如果WaitForInputIdle()对您不起作用,您可以尝试以下方法:

while (application.MainWindowHandle == IntPtr.Zero)
{
    await Task.Delay(100);
}

以下代码对我来说很好:

Process application = new Process();
application.StartInfo.UseShellExecute = false;
application.StartInfo.FileName = "notepad.exe";
if (application.Start())
{
    application.WaitForInputIdle();
    /* Optional
    while (application.MainWindowHandle == IntPtr.Zero)
    {
        await Task.Delay(100);
    } */

    Rectangle monitor = Screen.AllScreens[1].Bounds; // for monitor no 2

    SetWindowPos(
        application.MainWindowHandle,
        IntPtr.Zero,
        monitor.Left,
        monitor.Top,
        monitor.Width,
        monitor.Height,
        SWP_NOZORDER | SWP_NOSIZE | SWP_SHOWWINDOW);
}

请注意,这只会设置窗口的位置,而不是它的大小。如果您还希望更改大小,则需要删除该SWP_NOSIZE标志。

于 2018-09-01T14:05:22.650 回答