How to detect ctrl-c pressed?

[tangjun]

I created a new dialog based project and added OnKeyDown() message handler, but no matter what I pressed, it never got called?

[neo_the_1]

override PreTranslateMessage and do:

BOOL CDlg::PreTranslateMessage(MSG* pMsg) 
{
	if( pMsg->message == WM_KEYDOWN && pMsg->wParam == 0x43 && GetKeyState( VK_CONTROL ) < 0 ) {
		_asm int 3
	}

	return CDialog::PreTranslateMessage(pMsg);
}

regards

[tangjun]

when I used your code and press ctrl-c, the code inside got executed when the "ctrl" key was hold, and nothing happened after "c" pressed.

[neo_the_1]

try again i have made a change.

[tangjun]

Thanks that works. so 0x43 is the virtual key code for ctrl-c? how about ctrl-v? where did you find the table?

[neo_the_1]

Virtual-Key Codes from MSDN.
Enjoy.

[tangjun]

This approach works for CDialog, I assume it works the same way in CView. However, when I out the CView into ActiveX Control, it never got called. Do you know why?

[golanshahar]

This approach works for CDialog, I assume it works the same way in CView. However, when I out the CView into ActiveX Control, it never got called. Do you know why?

it never get called cause this ActiveX probably not handling Ctrl+C key press. only the the window that Handle it can get it while it in focus of course.
if you want to detect Ctrl+C in all the system no matter what window is active (at the moment ) you can consider using ::SetWindowsHookEx (..) with WH_KEYBOARD parameter to check it out.

Cheers

[tangjun]

However, the OnKeyDown() does get called in activeX control. Can you detect ctrl-c with OnKeyDown()?


I don't want to set it system wide because there are other window than the activex control in the system which is using the contrl-c.

[tmecham]

Why don't you just setup an Accelerator to handle Ctrl+C?

[tangjun]

how? sample code please?

[golanshahar]

However, the OnKeyDown() does get called in activeX control. Can you detect ctrl-c with OnKeyDown()?


I don't want to set it system wide because there are other window than the activex control in the system which is using the contrl-c.

if you want a system wide then OnKeyDown() is not the correct way. i wrote in my post before if you want a system wide keybaord hook you need to use ::SetWindowsHookEx(..) with WH_KEYBOARD.

Cheers

[tangjun]

no, I don't want system wide, my system will have more than one activex control, each one should handle the control-c by itself. so if ctrl-c pressed, the highlighted one should get called.