export_bitmap.c

来自「安装DDD之前」· C语言 代码 · 共 40 行

/* $Header: /cvsroot/lesstif/lesstif/test/Xm/drag_simple/export_bitmap.c,v 1.2 2001/05/23 13:55:31 amai Exp $ */

#include <Xm/Xm.h>
#include "bitmap.h"

Boolean 
export_bitmap(w, selection, target, type_return, value, length,
	      format, max_length, client_data, request_id)
	Widget          w;
	Atom           *selection, *target, *type_return;
	XtPointer      *value, client_data;
	unsigned long  *length, *max_length;
	int            *format;
{
	Bitmap_p        bitmap;
	XTextProperty   tmp_prop;
	int             status = 0;

	if (*target != XA_STRING)
		return False;
	/*
	 * Get bitmap name from clientData resource of the drag context and
	 * convert to property
	 */
	XtVaGetValues(w, XmNclientData, &bitmap, NULL);
	status = XmbTextListToTextProperty(XtDisplay(w), &(bitmap->name), 1,
			       (XICCEncodingStyle) XStringStyle, &tmp_prop);
	if (status == Success || status > 0) {
		*type_return = XA_STRING;
		*format = 8;
		*value = (XtPointer) XtMalloc((unsigned) tmp_prop.nitems);
		memcpy((void *) *value,
		       (void *) tmp_prop.value, (unsigned) tmp_prop.nitems);
		XFree((char *) tmp_prop.value);
		*length = tmp_prop.nitems;
		return True;
	}
	return False;
}