How create a GUI to allow screen capture?

Member 2965471

Albert Holguin

You mean other than the built in windows one? Do you only want a subset of your screen captured?

Member 2965471

I want to implement a mechanism that allows users to easy select the capture area (the entire screen, the window of a program, a rectangle, ...)...is it possible?

Mark Salsbery

Yes it's possible. Which part are you not sure about?

Mark Salsbery Microsoft MVP - Visual C++ :java:

Member 2965471

I want to realize a GUI like this: With mouse pointer I'd want: Entire Screen Capture Program Window Capture Part of a Program Window Select Generic Rectangle but I don't know which API I've to use in order to do this. May you help me please?

Amarnath S

This is possible. One of the early editions of Petzold's Windows books - "Programming Windows 95" gives an example of the BitBlt() which does exactly this. This is done in raw Windows API. You can, of course, redo it in C# or your favorite language.

Member 2965471

yes, i know BitBlt(), but how can i get the handle of the window that mouse over?how can i select, with mouse, a rectangle of the screen?

Mark Salsbery

Member 2965471 wrote:

but how can i get the handle of the window that mouse over?how can i select, with mouse, a rectangle of the screen?

This is relatively simple if you know anything about Win32 UI/graphics programming. Since you seem to want to skip that part, why not just search for examples? Binging "win32 draw selection rectangle on desktop" finds many examples, including this... Screen Capture (Simple Win32 Dialog Based)[^]

Mark Salsbery Microsoft MVP - Visual C++ :java:

modified on Saturday, May 14, 2011 12:44 PM