Thread-triggered event when ActiveX is embedded into the browser

8. Recommended

After ActiveX is embedded in the browser, the events triggered in the thread are no longer dynamic. If debugging is performed, the browser may be found to have an invalid error. If the same ActiveX is usedProgramIs normal.

The solution is to send a message in the thread, and the control responds to the message before fireevent.

1.	Create a control project.
2.	Class Wizard, use the add method to start the second thread and return. The followingCodeThe display method starts two threads and immediately returns to the mfcactivex control. The global function is also declared as a two-thread working function: Long threadproc (lpvoid pparam ); Void cfireeventctrl: startlengthyprocess () { DWORD dwid; Handle threadhandle = createthread (null, null, (Lpthread_start_routine) threadproc, (Lpvoid) This, null, & dwid ); Trace ("started the thread % x \ n", dwid ); }
3.	Add any event to be fired from the second thread using the Class Wizard.
4.	Define to send custom emails from two threads. When you add a message ing entry to the Control Message ing to receive custom messages, the message processing function is called. This message processing program triggers a required event. Sample how to execute the following in the mfcactivex control: // Define a custom message: # Define wm_threadfireevent wm_app + 101 // Add an entry for the message to the message map of the control Begin_message_map (cfireeventctrl, colecontrol) // {Afx_msg_map (cfireeventctrl) //} Afx_msg_map On_oleverb (afx_ids_verb_properties, onproperties) On_message (wm_threadfireevent, onfireeventforthread) // Custom Handler End_message_map () // Add a handler for the custom message that will fire our event Lresult cfireeventctrl: onfireeventforthread (wparam, Lparam) { Firelengthyprocessdone (); Return true; }
5.	It is a two-thread event that is triggered by a two-thread, and the time is posted back to the custom message defined in step 3 of the main thread. Trigger events. The following code demonstrates: Long threadproc (lpvoid pparam) { Sleep (2000); // simulate lengthy processing Cfireeventctrl * pctrl = (cfireeventctrl *) pparam; Postmessage (pctrl-> m_hwnd, Wm_threadfireevent, (Wparam) null, (Lparam) null ); Return true; }

At the same time, because the browser does not seem to create an ActiveX window, you need to add the code for creating the window.
MFC provides the function call colecontrol: createcontrolwindow () to create a control window. MFC implements ioleobject: setclientsite () to call colecontrol: onsetclientsite (). Convert the following to the-colecontrol derived class:

// Cmycontrol is derived from colecontrol.
Void cmycontrol: onsetclientsite ()
{
If (m_pclientsite)
// It doesn' t matter who the parent window is or what the size
// The window is because the control's window will be reparented
// And resized correctly later when it's in-place activated.
Verify (createcontrolwindow (: getshorttopwindow (), crect (0, 0, 0 ),
Crect (0, 0, 0 )));
Colecontrol: onsetclientsite ();
}
 

Refer:
Http://topic.csdn.net/t/20040109/17/2650433.html #
Http://support.microsoft.com/kb/195188/zh-cn
Http://support.microsoft.com/kb/157437