keybd_event doesn't work in activex,postmessage does,but can't simulate VK_BACK
I'm developing a br开发者_JS百科owser plugin which would interact with javascript. I used the open-source framework firebreath to develop the plugin which would pack NPAPI(non-ie browsers) plugin and activex(used in ie) in one dll file.
The following code works perfectly under non-ie browsers which uses the NPAPI plugin("enter","delete","backspace" keys can be pressed correctly):
//VKey stands for the key users pressed like "VK_RETURN","VK_BACK","VK_DELETE",etc
keybd_event(Vkey,0, KEYEVENTF_EXTENDEDKEY | 0,0);
But if I run the plugin in ie,nothing happens.I tried SendInput too,but still nothing happens:
KEYBDINPUT kb={0};
INPUT Input={0};
kb.wScan = VK_BACK;
kb.dwFlags = KEYEVENTF_UNICODE;
Input.type = INPUT_KEYBOARD;
Input.ki = kb;
::SendInput(1,&Input,sizeof(Input));
Which is odd is the combination of keys works correctly in ie. eg(ctrl+x):
> keybd_event(VK_CONTROL, MapVirtualKey(VK_CONTROL,0), 0 ,0);
> keybd_event(bCharKey,(BYTE)0, 0 ,0);
> Sleep(10);
> keybd_event(bCharKey,(BYTE)0, KEYEVENTF_KEYUP,0);
> keybd_event(VK_CONTROL, MapVirtualKey(VK_CONTROL,0),
> KEYEVENTF_KEYUP,0);
So I change the keybd_event to PostMessage:
::PostMessage(hbrowser,WM_KEYDOWN,vKey,1); //vKey stands for key pressed
::PostMessage(hbrowser,WM_KEYUP,vKey,1);
"VK_TAB","VK_DELETE","VK_RETURN","VK_TAB","VK_SPACE" works,but "VK_BACK" doesn't work.
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