Re: Is CBitmapButton the right tool for a push like checkbox?

On 27 July 2010 08:25, addicted2freefall <addicted2freefall-/[email protected]>wrote:

> I'm creating a custom window in WTL to hold video controls for a DirectShow
> app.  I'm first prototyping the window using a dialog.
>
> I've created a set of check boxes that I wish to behave in the "push like"
> manner (BS_PUSHLIKE).  They appear defined in the .rc file for the dialog
> like so:
>
>    CONTROL         "",IDC_VID1,"Button",BS_AUTOCHECKBOX | BS_BITMAP |
> BS_PUSHLIKE | WS_GROUP | WS_TABSTOP,6,7,19,18
>
> I've also loaded an image list for the button, which correctly shows the
> appropriate image when the button is in mouse button down and up states.
>
> In the code below, m_btnVid1 is defined as a CBitmapButton:


I think the problem here is that CBitmapButton sets the BS_OWNERDRAW style,
which is not compatible with other button styles (such as BS_AUTOCHECKBOX).

By the way, if you look at the button style definitions in WinUser.h you'll
see that they aren't independent from each other. In CBitmapButton::Init(),
the "ModifyStyle(0, BS_OWNERDRAW)" call should be changed to
"ModifyStyle(BS_TYPEMASK, BS_OWNERDRAW)".

- Jim


[Non-text portions of this message have been removed]



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