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Sending mouse events to an ActiveX control

Posted on 2003-11-19
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Last Modified: 2013-11-20
Hi

I have an MFC Dialog application with a single Dialog. In it is a Flash ActiveX control. I am using SetCapture and ReleaseCapture to send the mouse events to the dialog rather than to the control when the mouse is over it, and this is working fine.

What I need to do now is capture the WM_RBUTTONDOWN messages and deal with them myslef, but send the WM_LBUTTONDOWN and WM_MOUSEMOVE messages onto the control. I guess I need to use PostMessage to do this, but i don't know how to direct it to the control.

I am new to MFC programming and still trying to get to grips with how to reference things, but it appears to me that the whole dialog is one class, with one instance name and none of its contents (including the Flash control) have any instance names. How do I reference it?

Thanks for your help
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Question by:completecontrol
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Expert Comment

by:AndyAinscow
ID: 9779703
Use the SDK version where you supply the HWND of the window to receive the message
 ::PostMessage(hWnd_FLASHCONTROL,...)
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Author Comment

by:completecontrol
ID: 9779915
How can I get the hWnd for it.

This might be a stupid question. I have done Win32 C programming before and there are window handles flying around all over the place. But in MFC it seems like they are purposely hidden from you.
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AndyAinscow earned 200 total points
ID: 9779982
I don't know how you have put this Flash control on your dialog so the following is a bit of guesswork.

GetDlgItem(IDC_FLASH)->GetSafeHwnd();

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Author Comment

by:completecontrol
ID: 9780724
I've done it now. There is no need to use handles here, I used:

CWnd *FlashContolWnd = GetDlgItem(IDC_FLASH);
FlashControlWnd->PostMessage(WM_MOUSEMOVE, ...);
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LVL 44

Expert Comment

by:AndyAinscow
ID: 9781001
The other way with the handles is also useful for posting to windows in other apps.
Glad you got it sorted.
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