在Winform应用程序中关闭TabTip键盘时出现问题 [英] Problem closing TabTip keyboard in Winform application

问题描述

嗨我在Win7中遇到.NET触摸屏应用程序的问题（没有连接PC键盘）。我正在使用应用程序的一部分充当外部设备的终端窗口。当终端窗口打开时，我通过调用启动屏幕键盘： -

Hi I have an issue with a .NET touchscreen application in Win7 (no PC keyboard connected). I am using part of the app to act as a terminal window to an external device. When the terminal window opens, I start the on screen keyboard by calling:-

string progFiles = @"C:\Program Files\Common Files\Microsoft Shared\ink";
string onScreenKeyboardPath = System.IO.Path.Combine(progFiles, "TabTip.exe");
oskProcess = System.Diagnostics.Process.Start(onScreenKeyboardPath);

完成终端窗口后，我想通过一个单独关闭表单单击表单的X，然后将自动关闭屏幕键盘。所以我打电话给： -

After I have finished with the terminal window, I wish to close the form by a single click on the X of the form, which will then automatically close the on screen keyboard. So I call:-

Process[] oskProcessArray = Process.GetProcessesByName("TabTip");
foreach (Process onscreenProcess in oskProcessArray)
{
    onscreenProcess.Kill();
    onscreenProcess.Dispose();
}

这完全有效，除非按下最后一个键是CTRL，ALT或SHIFT键。如果是这种情况，即使在键盘被杀之后，这些仍然卡住。如果我重新启动屏幕键盘，它们仍然会突出显示。



如果我在关闭表单之前先点击键盘的红色X，一切都很好。但是我希望/需要通过我的代码中的单击来关闭它们。那么，如何在自动退出键盘时清除任何卡住键，或者有不同的方法来执行此操作？



而不是杀死进程，如果我使用： -

onscreenProcess.CloseMainWindow（）

这将清除粘性CTRL但不退出键盘。

This works perfectly, EXCEPT when the last key pressed was either a CTRL, ALT or SHIFT key. If this is the case, these remain "stuck" even after the keyboard is killed. If I restart the on screen keyboard, they are still highlighted.

If I click the red X of the keyboard firstly before closing my form, all is good. But I want/need to close both together by a single click from my code. SO, how do I clear any "stuck" keys when exiting the keyboard automatically, or is there a different way to do this?

Instead of killing the process, if I use :-
onscreenProcess.CloseMainWindow()
This will clear the "sticky" CTRL but does not exit the keyboard.

推荐答案

OK ....

我发现如果我在调用.CloseMainWindow（）和.Kill（）之间等待很长时间，它确实有效。我很惊讶我需要等待1.5秒让键盘关闭！

不是最有说服力的解决方案，但至少现在可以使用： -

OK....
I found that if I wait a LONG time between calling the .CloseMainWindow() and the .Kill() it does work. I am just surprised that I have need to wait 1.5 seconds for the keyboard to close!
Not the most eloquent solution, but at least it works now:-

Process[] oskProcessArray = Process.GetProcessesByName("TabTip");
foreach (Process onscreenProcess in oskProcessArray)
{
    Application.DoEvents();
    onscreenProcess.CloseMainWindow();
    Application.DoEvents();
    sleep(1500);
    onscreenProcess.Kill();
}

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