C++ KeyboardProc() 的用法疑问

kta912413 发表于 2012-4-20 20:47:09

嘛我也真是很久没逛论坛了，回来一下吧就是想问一下怎么把键盘所按的按键的数值调出来用（int）
看了很多例子，最接近的就是这个了

#include "stdafx.h"
#include <windows.h>
#include <stdio.h>
#include <iostream>
using namespace std;
HHOOK g_hKeyboard;

LRESULT CALLBACK KeyboardProc(int nCode, WPARAM wParam, LPARAM lParam)
{
if (nCode >= 0)
{
PMSLLHOOKSTRUCT pmll = (PMSLLHOOKSTRUCT) lParam;

printf("msg: %lu, x:%ld, y:%ld\n", wParam, pmll->pt.x, pmll->pt.y);

}

return CallNextHookEx(g_hKeyboard, nCode, wParam, lParam);
}
int main(void)
{
MSG msg;

g_hKeyboard = SetWindowsHookEx( WH_KEYBOARD_LL, KeyboardProc, GetModuleHandle(NULL), 0 );
if (!g_hKeyboard) printf("Hook error: %d\n", GetLastError());

while ( GetMessage(&msg, NULL, 0, 0) )
{
      TranslateMessage(&msg);
      DispatchMessage(&msg);
}

UnhookWindowsHookEx(g_hKeyboard);
return (int) msg.wParam;
}

但是就是不知道怎么把key的数值换成int,想请各位高手提点一下

附件：msdn 上对于这些数值的定义

LRESULT CALLBACK KeyboardProc(
int code,             // hook code
WPARAM wParam, // virtual-key code
LPARAM lParam    // keystroke-message information
);
wParam
Specifies the virtual-key code of the key that generated the keystroke message.
lParam
Specifies the repeat count, scan code, extended-key flag, context code, previous key-state flag, and transition-state flag. This parameter can be one or more of the following values

*Linnaea 发表于 2012-4-20 23:02:59

直接把wParam转换成long型，得到的就是虚拟键码
之后可以通过查表和检查lParam的FLAG状态找到对应的ASCII码

键码表：http://msdn.microsoft.com/en-us/library/windows/desktop/dd375731.aspx
lParam的信息：http://msdn.microsoft.com/en-us/library/windows/desktop/ms646267.aspx

另外还可以通过TranslateMessage来辅助

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C++ KeyboardProc() 的用法疑问