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Carsten Pedersen
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Oct 26, 2007 - 5:45 AM
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Hi,
I’m using the skin manager to apply the aqua.skin skin to my dialog application. However, there are a few buttons that I want to design myself. That is, I have the bitmaps for the In, Out, Disabled etc states. I’ve read that the CExtButton class needs to be derived in order to overload the _RenderImpl() function.
Can anyone inform me of an easy way to implement this functionality? I would like to retain the skin background on the transparent areas of the bitmap.
Best regards,
Carsten
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Carsten Pedersen
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Mar 14, 2008 - 7:13 AM
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It’s been a while since I looked at this the last time. But now I at last have some time to dig into drawing of custom buttons.
I checked the CExtPaintManagerSkin::PaintPushButton method, and it doesn’t do eny painting. It passes on to the CExtPaintManager::PaintPushButton, which does the painting.
But should I then inherit the PaintPushButton method instead? I cannot copy things from PaintPushButton into _RenderImpl() -derived method, because the parameters aren’t the correct ones.
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Technical Support
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Mar 17, 2008 - 4:00 AM
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The CExtPaintManagerSkin::PaintPushButton() is a very big method which paints buttons in its unique way. It invokes its parent class only in two particular cases: color picker menu buttons and date picker buttons. These two cases are not skinned yet.
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Carsten Pedersen
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Oct 29, 2007 - 4:53 AM
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The article tha Ivan refers to, talks about overriding the CExtPmBridge::PmBridge_GetPM() .
But it might be easier overloading the _RenderImpl() method, and using the things from CExtPaintManagerSkin::PaintPushButton (background drawing etc.) that is needed.
I’ll dig into it.
Thanks alot!
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Technical Support
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Oct 26, 2007 - 11:28 AM
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We are sorry the last sentence should be:
There you can copy the code from CExtPaintManagerSkin::PaintPushButton and change that part where the background is painted.
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Technical Support
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Oct 26, 2007 - 11:24 AM
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Although the CExtButton::_RenderImpl virtual method is called for drawing the button but in fact it is drawn by the currently selected paint manager( in the CExtPaintManager::PaintPushButton virtual method where it is overridden in the corresponding paint manager classes). So you should create a CExtButton-derived class and override the _RenderImpl virtual method. There you can copy the code from CExtPaintManagerSkin::PaintPushButton and the part where the background is painted.
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Ivan Surzhenko
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Oct 26, 2007 - 9:11 AM
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