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changing color of a pushbutton on a dialog box

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rangalo rangalo is offline Offline
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changing color of a pushbutton on a dialog box

 
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  #1
Jun 20th, 2005
Hi,

I want to change the color of my button during runtime..

i am writing the following code inthe OnCtlColor of my dialog box

C Syntax (Toggle Plain Text) 
  1. HBRUSH CPIVSyncDlg::OnCtlColor(CDC *pdc,CWnd *pwnd,UINT nCtlColor)
  2. {
  3. 	HBRUSH hbr = CDialog::OnCtlColor(pdc,pwnd,nCtlColor);
  4.  
  5. 	switch(nCtlColor)
  6. 	{
  7. 		case CTLCOLOR_BTN:
  8. 			if(pwnd->GetDlgCtrlID() == IDC_STARTSTOP)
  9. 				pdc->SetBkColor(RGB(255,0,0));
  10. 			return (HBRUSH)m_btbrush.GetSafeHandle();
  11. 		case CTLCOLOR_DLG:
  12. 			pdc->SetBkColor(RGB(255,255,255));
  13. 			pdc->SetBkMode(TRANSPARENT);
  14. 			return (HBRUSH)m_hbrush.GetSafeHandle();
  15. 		case CTLCOLOR_EDIT:
  16. 			pdc->SetBkColor(RGB(0,0,0));
  17. 			pdc->SetBkMode(TRANSPARENT);
  18. 			return (HBRUSH)m_hbrush.GetSafeHandle();
  19. 		default:
  20. 			return CDialog::OnCtlColor(pdc,pwnd,nCtlColor);		
  21. 	}
  22. 	return hbr;
  23. 	//return (HBRUSH)m_hbrush.GetSafeHandle();
  24. }

the button is IDC_STARTSTOP i want to turn it red..but the interesting thing is the whole dialog box turns red except the buttons...

i have searched the msdn library and I am following all the instruction given in example ...all in vein... any suggestion would be helpful..

thanks,
Hardik
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Re: changing color of a pushbutton on a dialog box

 
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  #2
Jul 19th, 2005
the method in "How do I change the background color of a control?" will not work for buttons!

If you want to change the color of a dialog button, you have to use an owner-draw button. (You can use bitmap buttons.) Changing the color through OnCtlColor() will not work for buttons. The following Knowledge Base articles may be of help to you: Q32685, "Using the WM_CTLCOLOR Message,"



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Originally Posted by rangalo
Hi,

I want to change the color of my button during runtime..

i am writing the following code inthe OnCtlColor of my dialog box

C Syntax (Toggle Plain Text) 
  1. HBRUSH CPIVSyncDlg::OnCtlColor(CDC *pdc,CWnd *pwnd,UINT nCtlColor)
  2. {
  3. 	HBRUSH hbr = CDialog::OnCtlColor(pdc,pwnd,nCtlColor);
  4.  
  5. 	switch(nCtlColor)
  6. 	{
  7. 		case CTLCOLOR_BTN:
  8. 			if(pwnd->GetDlgCtrlID() == IDC_STARTSTOP)
  9. 				pdc->SetBkColor(RGB(255,0,0));
  10. 			return (HBRUSH)m_btbrush.GetSafeHandle();
  11. 		case CTLCOLOR_DLG:
  12. 			pdc->SetBkColor(RGB(255,255,255));
  13. 			pdc->SetBkMode(TRANSPARENT);
  14. 			return (HBRUSH)m_hbrush.GetSafeHandle();
  15. 		case CTLCOLOR_EDIT:
  16. 			pdc->SetBkColor(RGB(0,0,0));
  17. 			pdc->SetBkMode(TRANSPARENT);
  18. 			return (HBRUSH)m_hbrush.GetSafeHandle();
  19. 		default:
  20. 			return CDialog::OnCtlColor(pdc,pwnd,nCtlColor);		
  21. 	}
  22. 	return hbr;
  23. 	//return (HBRUSH)m_hbrush.GetSafeHandle();
  24. }

the button is IDC_STARTSTOP i want to turn it red..but the interesting thing is the whole dialog box turns red except the buttons...

i have searched the msdn library and I am following all the instruction given in example ...all in vein... any suggestion would be helpful..

thanks,
Hardik
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mitulgolakiya mitulgolakiya is offline Offline
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Re: changing color of a pushbutton on a dialog box

 
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  #3
Jan 3rd, 2009
What is here m_btbrush and m_hbrush ?

I got an error with this code like this :

error C2228: left of '.GetSafeHandle' must have class/struct/union
With Regards,
Mitul Golakiya
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