Determine if there's any text selection in Windows

[sin]

Hello,
does anyone knows how to determine if there's in Windows any selected text in active window ? Language doesn't matter, but C# would be better.
Thanks for the answer

[weaknessforcats]

I would start with Programming Windows by Charles Petzold.

Not all windows can have selected text. Maybe you are interested only in textbox, listbox, or editbox windows. There are SelctionStart and SelectedText properties for these kinbds of windows. Google might help here.

[sin]

I would start with Programming Windows by Charles Petzold.

Not all windows can have selected text. Maybe you are interested only in textbox, listbox, or editbox windows. There are SelctionStart and SelectedText properties for these kinbds of windows. Google might help here.

Thanks for the post.
Maybe anyone have this book in electronic format ? :)

I'm interested not only in textbox'es, but anywhere in window.
Maybe I'll change the question.
Text is only what I need, but I, first of all, want know if anything is selected at all.

[weaknessforcats]

Almost certainly you will need to process the mouse left key down to remember a selection on a window. Not all windows let you make a selection.

Check out the Common Dialogs.