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Background of CXTPTabCtrl modification needed ...
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kiroecke View Drop Down
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Joined: 02 July 2008
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Points: 12 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kiroecke Quote  Post ReplyReply Direct Link To This Post Topic: Background of CXTPTabCtrl modification needed ...
    Posted: 14 January 2026 at 5:30am
Hello,

the background behind the tab-headers in my CXTPTabCtrl remains grey whatever I try. My last check was 

  
auto* pPaintManager = m_pTabCtrl.GetPaintManager(); // exact name may vary by control type
if (pPaintManager != nullptr)
{
   auto* pColorSet = pPaintManager->GetColorSet();
   if (pColorSet != nullptr)
   {
          pColorSet->m_clrHeaderFace.clrLight.SetStandardValue(RGB(255, 255, 255));
          pColorSet->m_clrHeaderFace.clrDark.SetStandardValue(RGB(255, 255, 255));
          pColorSet->RefreshMetrics();
   }
}


The code was stepped through in the debugging, but the area remained grey.
Any suggestions are welcome! 
Best, Kai

Header background CXTPTabCtrl
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xsensordev View Drop Down
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Joined: 19 August 2021
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Points: 31 		Post Options Post Options   Thanks (0) Thanks(0)   Quote xsensordev Quote  Post ReplyReply Direct Link To This Post Posted: Yesterday at 4:08pm
I'm going to assume a somewhat recent version of the Toolkit, and I'm guessing you're using the base theme for that control.

Try setting a breakpoint in CXTPTabBaseTheme::FillHeader or any of the other FillHeader functions to see what's happening.

By the way, that strip you want to fill is not distinguished from the tabs.  You'd have to modify the FillHeader function (for whichever theme is being applied) to perform your own painting of the strip.
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kiroecke View Drop Down
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Points: 12 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kiroecke Quote  Post ReplyReply Direct Link To This Post Posted: 12 hours 52 minutes ago at 3:40am
Hello, 

thank you so much for your help. Anyways, the mentioned ::FillHeader() function is protected and can't be invoked by user code. 

And, yes, I'm using v24.3.0 of Toolkit Pro.

Any further help is highly appreciated!
Best regards,
K.
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xsensordev View Drop Down
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Points: 31 		Post Options Post Options   Thanks (0) Thanks(0)   Quote xsensordev Quote  Post ReplyReply Direct Link To This Post Posted: 3 hours 54 minutes ago at 12:38pm
My solution to Toolkit protected code was to realize I didn't need anyone's permission to modify that code directly.

I modify their code as I need and rebuild the DLL or static lib. I track my changes so that I can reapply them as new Toolkit versions come out.

For example,  
CXTPTabBase::SetTheme
 does not have support for xtpControlThemeOffice2016. So I rolled my own  
class _XTP_EXT_CLASS CXTPTabBaseThemeOffice2016 : public CXTPTabBaseTheme
 and put in right in XTPTabBaseTheme and then updated the Toolkit to support that tab theme.
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xsensordev View Drop Down
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Joined: 19 August 2021
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Points: 31 		Post Options Post Options   Thanks (0) Thanks(0)   Quote xsensordev Quote  Post ReplyReply Direct Link To This Post Posted: 3 hours 51 minutes ago at 12:41pm
Here's a visual of that Office2016 tab.
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