回复： Write PNG file failed when build exe, but run normally on the development platform

[Cray__Ho]

Thanks for Colin's solutions (http://www.colinzhang.net/2013/09/worklog-how-to-get-image-from-clipboard.html ). Perfectly solved the problem. 

Can save clipboard picture as PNG format in executable file made by LV 2017.

[colinzhang]

Great to help you on this case.

[ROK]

To Capture just the Active Window requires two keys to be pressed. ALT + PRINT SCREEN. The example mimics both keys being pressed but only releases the ALT key , leaving the PRINT SCREEN key pressed which then 'confuses' the .NET action (for me it also left most of the keyboard inactive).

SOLUTION: before releasing the ALT key insert another call to the kbd-event function to release the PRINT SCREEN key

arg1    (0x2A - PRINT SCREEN)

arg2    0

arg3    2    (Release Key)

arg4    0

Alt-PRINT SCREEN now works for me in both environments.

[ROK]

To Capture just the Active Window requires two keys to be pressed. ALT + PRINT SCREEN. The example mimics both keys being pressed but only releases the ALT key , leaving the PRINT SCREEN key pressed which then 'confuses' the .NET action (for me it also left most of the keyboard inactive).

SOLUTION: before releasing the ALT key insert another call to the kbd-event function to release the PRINT SCREEN key

arg1    (0x2A - PRINT SCREEN)

arg2    0

arg3    2    (Release Key)

arg4    0

Alt-PRINT SCREEN now works for me in both environments.