Hellow,
Try to use SnapShot2 or SnapShot3 function. These functions have like input parameter a resolution in pixels of image that function returns. Here is syntax of functions:
http://www.mapwindow.org/documentation/mapwingis4.8/class_ax_map.html#a8c0629f96ad8d5d583d70e235e663173
You must input the pixel width of image, and height will be compute by system with save aspect ratio.
I use these functions and they work properly for me.
Try to use SnapShot2 or SnapShot3 function. These functions have like input parameter a resolution in pixels of image that function returns. Here is syntax of functions:
http://www.mapwindow.org/documentation/mapwingis4.8/class_ax_map.html#a8c0629f96ad8d5d583d70e235e663173
You must input the pixel width of image, and height will be compute by system with save aspect ratio.
I use these functions and they work properly for me.