以编程方式启用num Lock [英] Enabling num Lock programatically

问题描述

我正在为使用eVC的内置键盘的PocketPC编写程序，我想知道是否有办法以编程方式激活数字/符号锁定键？实际上，用户必须按两次键盘上的橙色键才能启用锁定功能，我希望能够在我的程序中启用它，这样用户所要做的就是键入数字。谢谢。

I am writing a program for a PocketPC that has a built-in keyboard using eVC, and I was wondering if there was a way to activate the number/symbol lock key programatically? As it is, the user has to push the orange key on the keyboard twice to enable the locking feature, I would prefer to be able to enable it in my program so all the user has to do is type the numbers. Thanks.

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Israel Brewster
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推荐答案

我也在WinCe上编程，但我使用的是普通键盘，但我认为，以下也应该和你一起工作：

I'm also programming on WinCe, but I'm using a normal keyboard, but I think, the following should work with you, too:

[ DllImport （ " coredll.dll" ）]

[DllImport("coredll.dll")]

public 静态 extern void keybd_event（ int vk， byte bScan， int dwFlags， int dwExtraInfo）;

public static extern void keybd_event(int vk, byte bScan, int dwFlags, int dwExtraInfo);

[ < font color ="＃008080"size = 2> DllImport （ " coredll.dll" <字体大小= 2>）]

[DllImport("coredll.dll")]

public < font color ="＃0000ff"size = 2> static extern short GetKeyState（ int < font size = 2> nVirtKey）;

public static extern short GetKeyState(int nVirtKey);

const int VK_NUMLOCK =（ int ）System.Windows.Forms。 Keys .NumLock ;

const int VK_NUMLOCK = (int)System.Windows.Forms.Keys.NumLock;

const byte KEYEVENTF_KEYUP = 0x0002;

const byte KEYEVENTF_KEYUP = 0x0002;

private static void EnableNumLock（）

private static void EnableNumLock()

{

short keystate = GetKeyState（VK_NUMLOCK）;

short keystate = GetKeyState(VK_NUMLOCK);

if （keystate == 0）

if (keystate == 0)

{ // Numlock已停用 - >激活它

keybd_event（VK_NUMLOCK，1,0,0）;

keybd_event(VK_NUMLOCK, 1, 0, 0);

keybd_event（VK_NUMLOCK，0 ，KEYEVENTF_KEYUP，0）;

keybd_event(VK_NUMLOCK, 0, KEYEVENTF_KEYUP, 0);

}

}

问候，

Sabine

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