QQ聊天記錄器演示程序(二)

2019-11-18 18:22:02

字體：大中小

來源：轉載

供稿：網友

基于上篇,此文將講述如何捕獲自己發送出去的消息:

// hottey 于2004-6-2號

QQ從本機發出消息無非就是兩種方式.(1)按發送按鈕,(2)按Ctrl+Enter組合鍵.當然自定義鍵除外.也不在本文考慮范圍之內:

基于這兩種發送的方式我選用:WH_CALLWNDPROC 和 WH_KEYBOARD兩種鉤子.Sorry,今天心情太爛(學校里的一些瑣事,郁悶).實在無心繼續.只能貼上源碼了.大家有興趣自己看看...有什么問題可以和我聯系.delphi21@163.com

//監控Ctrl+Enter組合鍵

function KeyboardProc(iCode: Integer; wParam: WPARAM; lParam: LPARAM): LRESULT; stdcall;
begin
    if (wParam = VK_RETURN) and (GetKeyState(VK_CONTROL) < 0) and (lParam >= 0) then
      begin
        SendMessage(Shared^.MainWnd,WM_USERCMD, UC_WINDESTROY, GetForegroundWindow);
      end;
     Result := CallNextHookEx(Shared^.KeyHook,iCode,wParam,lParam);
end;

//監控"發送"按鈕
function CallWndProc(iCode: Integer; wParam: WPARAM; lParam: LPARAM): LRESULT; stdcall;
type
Msg = ^CwpsTRUCT;
var
p : Msg;
begin
p := Msg(lParam);
//只對前臺窗口進行處理
if (p^.message = WM_COMMAND) and (LOWord(p^.wParam) = 1) then
    begin
      SendMessage(Shared^.MainWnd,WM_USERCMD, UC_WINDESTROY, GetForegroundWindow);
    end;
Result := CallNextHookEx(Shared^.CallHook,iCode,wParam,lParam);
end;

演示程序相關代碼:

procedure TForm1.WndProc(var Msg: TMessage);
begin
with Msg do
begin
   if Msg = WM_USERCMD then
   begin
     case wParam of
       UC_WINDESTROY:
       begin
         GetText(Findhwd(HWND(lParam)));
       end;
     end;
   end;
end;
inherited;
end;

function TForm1.Findhwd(parent: HWND):HWND;
var
hwd,hBtn,hMemo:HWND;
begin
hwd:=findwindowex(parent,0,'#32770',nil);

    Result := 0;
    if (parent<>0) then
    begin
      hBtn := FindwindowEX(hwd,0,nil,'發送(&S)');
      if (hBtn<>0) then
        begin
          hMemo := GetDlgItem(hwd,$00000000);
          if (hMemo<>0) then
            begin
              result := GetWindow(hMemo,GW_CHILD);
            end;
        end;
    end;
end;

procedure TForm1.GetText(hwd: HWND);
var
Ret: LongInt;
QQText: PChar;
Buf: integer;
begin
GetMem(QQText,1024);
if (hwd<>0) then
begin
try
    Ret := SendMessage(hwd, WM_GETTEXTLENGTH, 0, 0) + 1;
    Buf := LongInt(QQText);
    SendMessage(hwd, WM_GETTEXT, Min(Ret, 1024), Buf);
    memo1.Lines.Add(QQText);
finally
    FreeMem(QQText, 1024);
end;
end;
end;