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Hi,
I have crated a standard button using CExtButton. At runtime, I need to change the style to BS_OWNERDRAW. I am using SetWindowLongPtr(hWnd, GWL_STYLE, lStyle ). After this change I am expecting WM_DRAWITEM to receive. But this is not hapening. Any issue in doing this? Please suggest.

Thanks

Thanks. I will try using this method

Please provide your feedback. I am waiting for your response.

Thanks

Actually as we said earlier the CExtButton has BS_OWNERDRAW applied by default and you won’t be able to handle WM_DRAWITEM. But instead you can perform any custom painting in the CExtButton::_RenderImpl() virtual method. Please let us know if you tried this method.

We are using CreateWindow() to create the normal button and then subclassed using CExtButton. After the button is shown, then user could change the style to BS_OWNERDRAW using SetWindowLongPtr(). In this scenario, does CExtButton will have BS_OWNERDRAW after subclassing?

The CExtButton has BS_OWNERDRAW applied by default. If you need to repaint the button in some specific way, you can override the CExtButton::_RenderImpl() virtual method.