代码改变世界

简单钩子

2012-11-01 09:57  龙成  阅读(181)  评论(0)    收藏  举报 
 1 LRESULT CALLBACK KeyBoardHook(int nCode, WPARAM wParam, LPARAM lParam)
 2 {
 3         if ((lParam&WS_POPUP) == 0)
 4         {
 5             CString str;
 6             unsigned char ch;
 7             if(GetKeyState(VK_CAPITAL))//大小写
 8             {
 9                 ch=(char)wParam;
10                 str.Format("%c",ch);
11 
12             }
13             else
14             {
15                 ch=(char)(wParam+32);
16                 str.Format("%c",ch);
17 
18             }
19 
20             CtestMFCDlg *dlg = (CtestMFCDlg*)AfxGetApp()->GetMainWnd();
21 
22             str.Format("%c",ch);
23             dlg->ListBox.AddString(str);
24         }
25     return CallNextHookEx(hk_Myhook,nCode,wParam,lParam);
26 }
1 hk_Myhook = SetWindowsHookEx(WH_KEYBOARD,KeyBoardHook,0,GetCurrentThreadId());