| Home
| Previous
| Next
| Up

MGL_savePNGFromDC

Save a portion of a device context to a PNG file on disk.

Declaration

ibool MGLAPI MGL_savePNGFromDC(
MGLDC *dc,
const char *PNGName,
int left,
int top,
int right,
int bottom)

Prototype In

mgraph.h

Parameters

dc | Device context to save
PNGName | Name of bitmap file to save
left | Left coordinate of bitmap to save
top | Top coordinate of bitmap to save
right | Right coordinate of bitmap to save
bottom | Bottom coordinate of bitmap to save

Return Value

True on success, false on error.

Description

This function saves a portion of a device context as a PNG format bitmap file to disk. If this function fails for some reason, it will return false and you can get the error code from the MGL_result function.

This function supports saving in native formats of 1, 4, 8, 24, and 32 bits. Images with bit depths of 15 or 16 bits will be expanded to 24 bits.

Note that the source rectangle for the bitmap to be saved is not clipped to the current clipping rectangle for the device context, but it is mapped to the current viewport. If you specify dimensions that are larger than the current device context, you will get garbage in the bitmap file as a result.

See Also

MGL_savePNGFromDCExt, MGL_loadPNG, MGL_loadPNGIntoDC

Copyright © 2002 SciTech Software, Inc. Visit our web site at http://www.scitechsoft.com