创建一个虚拟键盘 [英] Creating a Virtual Keyboard

问题描述

我需要使用MFC创建虚拟键盘.
我是新手，不知道应该如何开始.

Hi,

I need to create a virtual keyboard using MFC.
i am a newbie and have no clue as to how i should start.

推荐答案

Codeproject:

XKeyboard-屏幕键盘 [虚拟屏幕键盘示例 [

Codeproject:

XKeyboard - on-screen keyboard[^]

Virtual On-Screen Keyboard Example[^]

关于CP和解决方案的问题相同.
看看有-CP问题 [ ^ ]

There is a same question on CP with solution.
Take a look there-CP Question[^]

如果您想要在整个系统范围内都能使用的真正的虚拟键盘，这里有两个关键点.

要模拟键盘输入，请使用Windows API SendInput，请参见 http://msdn.microsoft.com/en-us/library/ms646310(v=vs.85).aspx [WS_EX_NOACTIVATE | WS_EX_TOPMOST.

要在运行时设置样式，您将需要调用SetWindowLong，第二个参数必须为GWL_EXSTYLE.请参阅 http://msdn.microsoft.com/en-us/library /ms633591%28v=vs.85%29.aspx [ ^ ].

—SA

There are two keys points here, if you want the real Virtual Keyboard which would work system-wide.

For emulation of keyboard input, use Windows API SendInput, see http://msdn.microsoft.com/en-us/library/ms646310(v=vs.85).aspx[^].

Now the big problem is that you need to have a keyboard focus on the control where you "type" data. It will create a problem for the Virtual Keyboard window, as it will grab focus on each click. To overcome this problem, you need two things: the Virtual Keyboard window should not be able to activate. At the same time, it should be on top. So, you need two unusual styles: WS_EX_NOACTIVATE | WS_EX_TOPMOST.

To set the style during run time, you will need to call SetWindowLong, second parameter must be GWL_EXSTYLE. See http://msdn.microsoft.com/en-us/library/ms633591%28v=vs.85%29.aspx[^].

—SA

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