We help IT Professionals succeed at work.

We've partnered with Certified Experts, Carl Webster and Richard Faulkner, to bring you two Citrix podcasts. Learn about 2020 trends and get answers to your biggest Citrix questions!Listen Now

x

Using OWL's DrawText function

sagitarian
sagitarian asked
on
Medium Priority
418 Views
Last Modified: 2012-08-14
I used DrawText function to write some text on a specific DC on my client window.
Now I want to erase that text only by giving a reference to the DC.
I used SetROP2( R2_NOTXORPEN ) an it works with rectangles, for example, but not with DrawText.

How should I do it? And why does it not work the other way ?
Comment
Watch Question

I'm not 100% sure but the text functions does not use the pen. You use SetTextColor(). And there you can not set the NOTXOR. What you can do is write the text to a DC in memory and use BitBlt() to copy the text into your normal DC. And there you can use mask and so to get the effect you want. I could get you some example code. But not today.

Not the solution you were looking for? Getting a personalized solution is easy.

Ask the Experts

Author

Commented:
I'm definitly sure that text functions do not use the pen. I tried to change the pen color and text still came out in black.
About the SetTextColor() function, I end up with another problem I have which is to find out the way to get the system background color. If I could do that, it would be simple.
The BitBlt() function seems to be more complicated and would need an example.

Thanks very much for the answer!

Commented:
hmm, I have a similar question. In my app, I have a splitter, and I want to display the splitting percentage between two panels, using DrawText (or TextOut), right beside the mouse cursor. However, when I move the mouse, the text written at previous cursor position is not erased. How can I do that?
Access more of Experts Exchange with a free account
Thanks for using Experts Exchange.

Create a free account to continue.

Limited access with a free account allows you to:

  • View three pieces of content (articles, solutions, posts, and videos)
  • Ask the experts questions (counted toward content limit)
  • Customize your dashboard and profile

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

OR

Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.