Hi Waldemar.
I think there are two minor inconsistencies in the doc:
Setting video modes
Before a program can do any graphics drawing it has to configure the graphics driver for the desired graphics mode. It is done with the GrSetMode function as follows:
==>void GrSetMode(int which,...);
I think the above line should read int GrSetMode(int which,...);
returning non zero (TRUE) on success.
OK, thanks.
Graphics cursors
The library provides support for the creation and usage of an unlimited number of graphics cursors. An application can use these cursors for any purpose. Cursors always save the area they occupy before they are drawn. When moved or erased they restore this area. As a general rule of thumb, an application should erase a cursor before making changes to an area it occupies and redraw the cursor after finishing the drawing. Cursors are created with the GrBuildCursor function:
==>GrCursor *GrBuildCursor(char far *pixels,int pitch,int w,int h, int xo,int yo,GrColorTableP c); ==>GrCursor *GrBuildCursor(char *data,int w,int h,int xo,int yo,GrColorTableP c);
I think one of the above two lines is obsolete or has a typo in it ?
Thanks again, I forgot to delete the second one.
BTW, do you know why that line in src/bgi/clrdev.c is commented out ?
void __gr_cleardevice(void) { _DO_INIT_CHECK; GrResetClipBox(); GrFilledBox( 0, 0+PY, getmaxx(), getmaxy()+PY, BLACK); __gr_Reset_ClipBox(); ==>/* GrClearScreen(__gr_colorbg); */ moveto( 0, 0); }
I don't know. Perhaps GrFilledBox do the work faster. Harmuth, are you there?