hi, this tutorial will tell you how to make a screen shot with nds emulators method 1 need: Microsoft office pic manager, Microsoft pic and fax viewer. ok open up your emulator load a game and then press the print screen key on your keyboard. then open up the m$ pic manager hit ctrl+v to paste it and then save it. now for the formating part, now right click and go to open as then open the pic with m$ pic and fax viewer, then save it as a jpeg (its the best quality) then your done. method 2 need: paint ok this is the more simpler method open your emulator load a game and then press the print screen key on your keyboard. then just open paint, hit ctrl+v and then go to file and save as. hope this helps now go get some points ;D
Here's a similar tutorial with pictures and such. https://www.romulation.org/forum/index.php/topic,6022.0.html
it was differant for me it did not show the no$gba window or gap and it dident cpuer the whol computer scren just the top and bottom window