Customize CColorDialog

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Hi everyone,
I must modify the Windows default CColorDialog. I want to put a combobox instead of "define custom colors" pushbutton. I found some explanations, but I did not understand how to use the color.dlg template and CHOOSECOLOR structure.
Someone could help me?
Thanks

Posted 6-Sep-10 21:22pm

symreds

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Richard MacCutchan · Answer 1 · 2010-09-06T22:18:00

Solution 1

You should add the color.dlg resource to your project's resource file and add or modify the controls to meet your own requirements. Then add a callback function to handle messages raised by the new controls. The dialog operates much the same as a user defined dialog but with the additional standard functionality provided by Microsoft. For further information see here[^] and the linked example.

Posted 6-Sep-10 22:18pm

Richard MacCutchan

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Sandeep Mewara 7-Sep-10 8:13am

Comment posted by OP:
Thanks Richard,
just two questions.

- I'm using MFC, I've to add the callback function even in this case?
- How can I create LPCHOOSECOLOR lpcc?

Thanks a lot

Sandeep Mewara 7-Sep-10 8:14am

Oops! Caching probably. Now I can see you knew and responded to it! Sorry for posting it again as a comment to you.

symreds · Answer 2 · 2010-09-07T02:44:00

Solution 3

I know what's a pointer, but I doubt this is the right way to use:
CHOOSECOLOR *lpcc = new CHOOSECOLOR;
ChooseColor(lpcc);
Anyway, the callback function is also for MFC?

Posted 7-Sep-10 2:44am

symreds

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Richard MacCutchan 7-Sep-10 10:21am

Well I guess there is something of a gap in your understanding of pointers. Creating a pointer and pointing it to some empty piece of memory as you have shown above will merely get you an access violation. I suggest you go back to the documentation and follow the notes on how to initialize the structure before calling the ChooseColor function. As to whether this is the same in MFC, I am not sure, you need to check the documentation for a comparable MFC class.

symreds 7-Sep-10 10:26am

Thanks