Submitted by Anonymous (not verified) on Fri, 06/15/2012 - 12:07

I can get foreground colors working fine in a scrolled text list, but not the background colors. Below is a small sample program I pulled off the web which shows what I am trying to do. It displays the text items with different foreground colors. If I comment out the setting of the XmNrenditionForeground and uncomment the line below it to try to set XmNrenditionBackground it has no effect
/* compiled on RH7.3 with OpenMotif 2.2.2-5 with command
*
* gcc colored_list.c -o colored_list -I/usr/X11R6/include -L/usr/X11R6/lib -lXm -lXt -lX11 -lXp -lXext -lSM -lICE
*
* I`ve modified the original slightly to just show implication of color
*/
/*
** This file is provided as is, and may be used and
** distributed freely without liability.
*/
/*
** A.J.Fountain,
** Imperial Software Technology (IST),
** Berkshire House,
** 252 Kings Road,
** Reading,
** Berkshire,
** United Kingdom RG1 4HP.
**
** Telephone +44 1189 587055
** Fax +44 1189 589005
** Email af@ist.co.uk
*/
#ifndef lint
static char *sccsid[] = {"%Z%%Q%%M% %I%"} ; /* %E% */
#endif /* lint */
/* colored_list.c illustrates the basic features of
** render tables and renditions by creating a
** multi-font, multi-color List widget.
*/
#include
#include
#include
/* ConvertStringToPixel()
** A utility function to convert a color name to a Pixel
*/
Pixel ConvertStringToPixel (Widget widget, char *name)
{
XrmValue from_value, to_value; /* For resource conversion */
from_value.addr = name;
from_value.size = strlen(name) + 1;
to_value.addr = NULL;
XtConvertAndStore (widget, XmRString, &from_value, XmRPixel, &to_value);
if (to_value.addr) {
return (*((Pixel*) to_value.addr));
}
return XmUNSPECIFIED_PIXEL;
}
/*
** A convenient structure to hold the data
** for creating various renditions
*/
typedef struct RenditionData_s
{
char *color;
char *font;
} RenditionData_t;
#define MAX_LINES 4
RenditionData_t rendition_data[MAX_LINES] =
{
{ "red", "fixed" },
{ "green", "fixed" },
{ "blue", "fixed" },
{ "orange", "fixed" }
};
/*
** Arbitrary data to display in the List.
** Each line will appear in a different font/color.
*/
static char *poem[] =
{
"Mary had a little lamb",
"Its fleece was white as snow",
"And everywhere that Mary went",
"The lamb was sure to follow",
(char *) 0
};
/*
** CreateListData() routine to convert the
** poem into an array of compound strings
*/
XmStringTable CreateListData (int *count)
{
XmStringTable table = (XmStringTable) 0;
int line = 0;
table = (XmStringTable) XtMalloc ((unsigned) MAX_LINES * sizeof (XmString)) ;
while (poem[line] != (char *) 0) {
/* create a compound string, using the rendition tag */
table[line] = XmStringGenerate ((XtPointer) poem[line],
NULL,
XmCHARSET_TEXT,
rendition_data[line].color);
line++;
}
*count = line;
return table;
}
main (int argc, char *argv[])
{
Widget toplevel, rowcol, list;
XtAppContext app;
Arg args[10];
XmRendition renditions[MAX_LINES];
XmRenderTable rendertable;
XmStringTable xmstring_table;
int xmstring_count;
Pixel pixels[MAX_LINES];
int n, i;
XtSetLanguageProc (NULL, NULL, NULL);
toplevel = XtVaOpenApplication (&app, "ColoredList", NULL, 0, &argc, argv, NULL,
sessionShellWidgetClass, NULL);
rowcol = XmCreateRowColumn (toplevel, "rowcol", NULL, 0);
/* Create some colors */
for (i = 0; i < MAX_LINES; i++) {
pixels[i] = ConvertStringToPixel (toplevel, rendition_data[i].color);
}
/* Create some Renditions one per line */
for (i = 0 ; i < MAX_LINES ; i++) {
n = 0;
XtSetArg (args[n], XmNrenditionForeground, pixels[i]); n++;
// XtSetArg (args[n], XmNrenditionBackground, pixels[i]); n++;
XtSetArg (args[n], XmNfontName, rendition_data[i].font); n++;
XtSetArg (args[n], XmNfontType, XmFONT_IS_FONT); n++;
renditions[i] = XmRenditionCreate (toplevel, rendition_data[i].color, args, n);
}
/* Create the Render Table */
rendertable = XmRenderTableAddRenditions (NULL, renditions, XtNumber (renditions), XmMERGE_NEW);
/* Create the data for the list */
xmstring_table = CreateListData (&xmstring_count);
/* Create the List, using the render table */
n = 0;
XtSetArg (args[n], XmNrenderTable, rendertable); n++;
XtSetArg (args[n], XmNitems, xmstring_table); n++;
XtSetArg (args[n], XmNitemCount, xmstring_count); n++;
XtSetArg (args[n], XmNwidth, 400); n++;
XtSetArg (args[n], XmNvisibleItemCount, xmstring_count + 1); n++;
list = XmCreateList (rowcol, "list", args, n);
XtManageChild (list);
/* Free the memory now the widget has copied the data */
/* First, the compound strings */
for (i = 0; i < xmstring_count; i++)
XmStringFree (xmstring_table[i]);
XtFree ((char *) xmstring_table);
#if 0
/* Secondly, the XmRendition objects */
for (i = 0; i < XtNumber (renditions); i++)
XmRenditionFree (renditions[i]);
/* Lastly, the XmRenderTable object */
XmRenderTableFree (rendertable);
#endif
XtManageChild (rowcol);
XtRealizeWidget (toplevel);
XtAppMainLoop (app);
}
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