Forum

Dear Support,

We’d like to use your CExtEdit class for one of our controls, which would be disabled. But the originally used disabled color seems to be a bit dark, so we’d like to lighten it. I see that this color is set in CExtEditBase::CtlColor. How could we achieve our requirement without copying any code from this method? I see that m_clrBackPrev variable holds the current background color, so I’ve tried this:

COLORREF CMyEdit::OnQueryBackColor() const
{ 
	COLORREF clrOrig = CExtEdit::OnQueryBackColor();
	if( clrOrig == COLORREF(-1L) && m_clrBackPrev != COLORREF(-1L) )
		clrOrig = RGB((GetRValue(m_clrBackPrev)+255)/2, (GetGValue(m_clrBackPrev)+255)/2, (GetBValue(m_clrBackPrev)+255)/2);
	return clrOrig;
}

But it doesn’t work good: as soon as I hover over the editbox, it turns white and stays like that forever.

The class needs to be reusable, so it should work exactly like your class except for the disabled background color. And we’d really like to avoid copying codes from your source, as that would require constant checkup with every upgrade.

Could you please point me to the right direction? Thank you!
Chris

Would you send us a screenshot that illustrates the issue?

I’ve sent the screenshot in e-mail.

You can achieve this by overriding the OnQueryBackColor() method in this way

COLORREF OnQueryBackColor() const
{ 		
	COLORREF clrOrig = CExtEdit::OnQueryBackColor();
	
	if( clrOrig == COLORREF(-1L) )
	{
		bool bReadOnly = (GetStyle()&ES_READONLY) != 0 ? true : false;
		bool bDisabled = OnQueryWindowEnabledState() ? false : true;
		COLORREF clrSysBk =
			PmBridge_GetPM()->GetColor( 
				( bReadOnly || bDisabled ) 
					? COLOR_3DFACE 
					: COLOR_WINDOW,
				(CObject*)this 
				);
		clrOrig =
			RGB( 
				(GetRValue(clrSysBk) + 255) / 2, 
				(GetGValue(clrSysBk) + 255) / 2, 
				(GetBValue(clrSysBk) + 255) / 2
				);
	}
	return clrOrig;
	
}

Using this code removes the white border which would appear when the editbox does not have the focus and the mouse does not hover over the control. How could I get that back? Thank you!