怎样做一个全局的键盘钩子
怎样可以做一个全局的键盘钩子:它可以捕获所有edit窗口的按键消息
我的实现如下:(我的作法不能完成该功能)
#include <Winuser.h>
#include <Windows.h>
HHOOK g_hKeyBoardHook=NULL;
#pragma data_seg(".shared")
HWND g_hWnd = NULL;
COPYDATASTRUCT g_data;
char iMsg;
#pragma data_seg()
LRESULT CALLBACK cbKeyBoardProc(int nCode, WPARAM wParam, LPARAM lParam )
{
if ( nCode == HC_ACTION)
{
// switch(wParam)
// {
// case VK_SHIFT:
// 89 g_bLButtonDown = TRUE;
// g_data.dwData=WM_LBUTTONDOWN;
if(lParam&0x80000000)
{
g_data.dwData=wParam;
SendMessage(g_hWnd,WM_COPYDATA,0,(LPARAM)&g_data);
}
// break;
// default:
// break;
// }
}
return CallNextHookEx(g_hKeyBoardHook,nCode,wParam,lParam);
}
void StartHook(HWND hWnd)
{
if(g_hKeyBoardHook!=NULL)
return;
g_hWnd = hWnd;
g_hKeyBoardHook=SetWindowsHookEx(WH_KEYBOARD,(HOOKPROC)cbKeyBoardProc,theApp.m_hInstance,0);
}
void StopHook()
{
// TODO: Add your control notification handler code here
if(g_hKeyBoardHook!=NULL)
{
UnhookWindowsHookEx(g_hKeyBoardHook);
g_hKeyBoardHook=NULL;
}
}
//////////////////
在以上代码中我省掉向导生成有关CKeyHookApp的代码
在我的应用中是这样调用该钩子的:
HWND hWnd;
hWnd=::FindWindow("Edit",0);
StartHook( hWnd) ;
但是不能完成预定功能 王各位大虾指点