Conference bulova::decw_jan-89_to_nov-90

2896.0. "Help with pixmap toggle-buttons" by JABBER::MARSDEN (Debbie bluebirds over the white cliffs...) Thu Jun 07 1990 12:28

I am experiencing some level of frustration trying to make a toggle button
in a dialog box I've created, a pixmap rather than a text label. 

Initially I tried getting the drawable-id using XtWindow(window_id), 
however I was getting BadDrawable errors. I realise that this was because 
I had NOT realised the window_id widget (the dialog box). I am now trying 
to use a draw_id derived from the shell widget (which has been realised) 
but I'm now experiencing 

X error event received from server:  BadMatch - parameter mismatch
  Failed request major op code 62 (X_CopyArea)
  Failed request minor op code 0 (if applicable)
  ResourceID 0x500024 in failed request (if applicable)
  Serial number of failed request 120
  Current serial number in output stream 199
%XLIB-E-ERROREVENT, error event received from server
%TRACE-E-TRACEBACK, symbolic stack dump follows
module name     routine name                     line       rel PC    abs PC

                                                           00098070  00098070
                                                           00097E95  00097E95

........................................................................

I've scoured this and other DECWindow conferences for a clue and think its
something to do with *depth* ??. I've enclosed a code segment which may
or may not help someone in putting me on the right track.

Thanks in advance for any/all pointers 
(cross posted in DECWINDOWS_PROGRAMMING)
    
/Debbie 

Code segment follows ....

	Widget shell;
	Widget *window_id;
    	Display			*dpy;
	Drawable		draw_id;
	Screen			*screen_id;
	.
	.
	.
	dpy = XtDisplay(shell);
	printf("\n display id = %d", dpy);

	screen_id = XtScreen(shell);
	printf("\n screen ptr = %d", screen_id);

	draw_id = XRootWindowOfScreen(screen_id);
	printf("\n drawable id = %d", draw_id);

	status = XReadBitmapFile(
				dpy, draw_id, 
				filename,
				&pix_width, 
				&pix_height, 
				&pix_id, 
				&pix_hot_x,
				&pix_hot_y);
	
	if (status != BitmapSuccess)
	    {
	    printf("\nCould not load up bitmap");
	    LIB$STOP(0);
	    }

	DwtSetArg(DwtPixmap, arglist, argcount++, DwtNlabelType);
	DwtSetArg(pix_id, arglist, argcount++, DwtNpixmapOn);
	DwtSetArg(pix_id, arglist, argcount++, DwtNpixmapOff);

	item_widget[item] = DwtToggleButtonCreate
			 	( *window_id, "", 
				  arglist,
				  argcount);

	XtManageChild(item_widget[item]);
	.
	.
    

Sounds like a depth mismatch.  The icon must be a (deep) pixmap rather than
a bitmap.  Are you only getting this error on a color (non-monochrome) system?

-steve-

    Yep Steve,
    	It was OK on a monochrome system. I've changed the way I read in my
    bitmap data..(I no longer use the XReadBitMapFile routine), I now 
    create pixmaps from the bitmap data, and all appears to be OK. 
    Thanks for the pointer. 
    
    /Debbie