用了幾個方式應該是我的方式有誤，還請前輩指正。
1.直接判斷PMouseHookStruct.dwExtraInfo
2.利用GetMessagExtraInfo
ex:
Mouse_event(MHandle,x,y,0,GetMessageExtraInfo)
在Hook時去判斷GetMessageExtraInfo....

設自定常數..再於Hook時去讀還是沒法判別....


[code delphi]
function MouseHook(iCode: Integer; wParam: wParam; Mouse: lParam): LRESULT; stdcall;
const
WM_FROMEVENT=$00553200;
var
msg:TEventMsg;
Mx,My:Integer;
TMMsg:Integer;
PMouseST:PMouseHookStruct;
begin
if iCode < 0 then begin
Result := CallNextHookEx(hMouseHook,iCode,wParam,Mouse);
end else if icode=HC_ACTION then begin
PMouseST := PMouseHookStruct(Mouse);
if (GetMessageExtraInfo and WM_FROMEVENT)=WM_FROMEVENT then
Result := CallNextHookEx(hMouseHook,iCode,wParam,Mouse)
else
Result:=1;
end;
end;[/code]

還請前輩指正...

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