[PATCH] gdk/gdkpixmap.[ch]: state constness of `data` in create pixmap routines

[Ben Stewart <ben stewart+gtkdev tucuxi org>]

Hi all,

The attached patch file resolves an issue where const char * data cannot
be passed to the GDK create pixmap from XPM routines.

Apologies in advance if this is not the correct venue to submit a patch
- this is the first one I have submitted to the GTK+ project.

Cheers,

Ben


--------

Alter prototypes in gdk/gdkpixmap.[ch] to state constness of `data'

The routines to create a pixmap from a string of XPM data do not alter
the source data, yet the interface is not currently marked as 'const
gchar**'.

The public interface for the following routines are affected by the
patch, however this should not affect any software calling into the GDK
library.

- gdk_pixmap_colormap_create_from_xpm_d()
- gdk_pixmap_create_from_xpm_d()


diff --git a/gdk/gdkpixmap.c b/gdk/gdkpixmap.c
index 2adb33f..c4f7b13 100644
--- a/gdk/gdkpixmap.c
+++ b/gdk/gdkpixmap.c
@@ -720,7 +720,7 @@ gdk_pixmap_colormap_create_from_xpm_d (GdkDrawable     *drawable,
 				       GdkColormap     *colormap,
 				       GdkBitmap      **mask,
 				       const GdkColor  *transparent_color,
-				       gchar          **data)
+				       const gchar    **data)
 {
   GdkPixbuf *pixbuf;
   GdkPixmap *pixmap;
@@ -763,7 +763,7 @@ GdkPixmap*
 gdk_pixmap_create_from_xpm_d (GdkDrawable    *drawable,
 			      GdkBitmap     **mask,
 			      const GdkColor *transparent_color,
-			      gchar         **data)
+			      const gchar   **data)
 {
   return gdk_pixmap_colormap_create_from_xpm_d (drawable, NULL, mask,
 						transparent_color, data);
diff --git a/gdk/gdkpixmap.h b/gdk/gdkpixmap.h
index 736872c..75b6c47 100644
--- a/gdk/gdkpixmap.h
+++ b/gdk/gdkpixmap.h
@@ -94,12 +94,12 @@ GdkPixmap* gdk_pixmap_colormap_create_from_xpm   (GdkDrawable    *drawable,
 GdkPixmap* gdk_pixmap_create_from_xpm_d          (GdkDrawable    *drawable,
 						  GdkBitmap     **mask,
 						  const GdkColor *transparent_color,
-						  gchar         **data);
+						  const gchar   **data);
 GdkPixmap* gdk_pixmap_colormap_create_from_xpm_d (GdkDrawable    *drawable,
 						  GdkColormap    *colormap,
 						  GdkBitmap     **mask,
 						  const GdkColor *transparent_color,
-						  gchar         **data);
+						  const gchar   **data);
 
 /* Functions to create/lookup pixmaps from their native equivalents
  */