Screenshots on Mac OX X 10.7 Lion

[skalogryz]

isn't this the opposite of what the OP wanted ee he wants a screen shot of his application not the desktop.

Tricky question: what if an application has mulitple windows?
Tricky answer: loop through wach of the form, and cut the screenshot by bounding rect. Whatever pixel doesn't belong to the application can be changed to white with 0 alpha-channel

The next tricky question: multiple monitors?


2: Shebuka, doesn't sound right to me... to be honest. But I have a better example myself

[Shebuka]

isn't this the opposite of what the OP wanted ee he wants a screen shot of his application not the desktop.

Comment the Application.minimize part and you get application screenshot, same behavior as the legacy code (you get the whole desktop screenshot, with all stuff behind application).

2: Shebuka, doesn't sound right to me... to be honest. But I have a better example myself

What example?

[skalogryz]

2: Shebuka, doesn't sound right to me... to be honest. But I have a better example myself

What example?

Sorry, I meant to say "But I don't have a better example"

[nitram]

Shebuka: Modified your Code for a PixelPicker. Just need to read out Pixels by

     TGColor := screenImage.TColors[MousePosX,MousePosY];

in addition. Now I come to following lines of your code...

      //FreeAndNil(screenImage);              //This is commented for a reason, don't uncomment it
      //FreeAndNil(screenBitmapContext);      //This is commented for a reason, don't uncomment it
      //FreeAndNil(screenBitmapRawImage);     //This is commented for a reason, don't uncomment it
      //FreeAndNil(screenshotImage);          //This is commented for a reason, don't uncomment it

Has somebody an idea why free methods of above does not work.

Even

    screenImage.free;

does not work. As I do several screenshots per second I get soon a memory overflow....

Lazarus 1.2.6, Mac mini, yosemite

[felipemdc]

2 things:

1> In my original answer indeed I thought the issue was about a desktop screenshot, I totally missed that he wanted a window screenshot

2> LCL-Cocoa supports desktop screenshot using the normal method