SetwindowsHookEx WH_GETMESSAGE
看了下MSDN对hook方面的描述,就开始写了个测试程序,实现功能如下,拦截并屏蔽用户定义消息wm_user1
const wm_user1=WM_USER+12;
安装钩子:hHook:=SetwindowsHookEx(WH_GETMESSAGE,@GetMsgProc,0,GetCurrentThreadId());
function GetMsgProc(code:integer; // hook code wParam:WPARAM; // removal option lParam:LPARAM // message):integer;stdcall;var myMsg:TMsg; begin if (code<>HC_ACTION) then begin result := CallNextHookEx(hHook,code,WParam,LParam); exit; end else begin myMsg := PMsg(lParam)^; if (myMsg.message=wm_user1) then begin [color=#FF0000]myMsg.message:=WM_NULL;//瞎蒙的 Result :=1;[/color] end else begin result := CallNextHookEx(hHook,code,WParam,LParam); end; end;end;