工作线程使主线程MFC处于非活动状态对话框

Question

I have MFC dialog based app that has one dialog. On button click i start another work thread. Unfortunately, while function of work thread is running a can not access to controls on my dialog.

void CrMainDlg::OnBnClickedButton1()
{
   //...
   CWinThread* fonThread = AfxBeginThread(WorkerThreadProc, iP, THREAD_PRIORITY_NORMAL, 0, 0, NULL);
   //...
 } 

UINT CrMainDlg::WorkerThreadProc(LPVOID Param)
{
//...
       while(/*some bool*/)
       {
           //makesomething
           Sleep(1000);
       }
       //...
}

Only if i write Sleep(1000) i could have access to ScrollBar or another button or something else on the main dialog. If i do not - i could access to controls only after while ends...

What am i doing wrong?

Answer 1

(1) The worker thread function must be static. If it is not declared static the code you have posted will not compile. (2) The worker thread should not access any controls, only data.