gdi drawing

[Guest]

Hi, i have a gdi drawing program that on a mouse move event, if the left
mouse button is pushed then draw a line...very simple. only problem is that
if anything goes over my drawing surface or i minimize the form, my graphics
go away...how can i prevent this or save my graphics from going away?

 

[Chris]

Hi, i have a gdi drawing program that on a mouse move event, if the left
mouse button is pushed then draw a line...very simple. only problem is that
if anything goes over my drawing surface or i minimize the form, my graphics
go away...how can i prevent this or save my graphics from going away?

You could save the drawing to a bitmap. Do a <Favorite Search Engine>
search for examples how to do this. One example can be found here.

http://www.experts-exchange.com/Programming/Programming_Languages/Dot_Net/Q_20850641.html

Chris

 

[Guest]

i tried that, but then once i revert back from the bitmap, i cant erase
anything that was in the bitmap

 

[Michel van den Berg]

Dear iwdu15,

Don't know if it will help you, but have a look at:
http://www.bobpowell.net/picturebox.htm
Also note that bobpowell's page has a lot more on gdi+ (it is a great
site!), so have a look at the rest too.

Michel van den Berg