(x_set_tool_bar_lines): Check that width and height is greater than

zero before clearing area.

(x_set_tool_bar_lines): Check that width and height is greater than
zero before clearing area.
caacfeb8 · Jan Djärv · 009bb5d2 · caacfeb8
Commit caacfeb8 authored Feb 07, 2005 by Jan Djärv
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Showing with 8 additions and 4 deletions

src/xfns.c src/xfns.c +8 -4

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--- a/src/xfns.c
+++ b/src/xfns.c
@@ -1398,10 +1398,14 @@ x_set_tool_bar_lines (f, value, oldval)
      int width = FRAME_PIXEL_WIDTH (f);
      int y = nlines * FRAME_LINE_HEIGHT (f);

-      BLOCK_INPUT;
-      x_clear_area (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
-		    0, y, width, height, False);
-      UNBLOCK_INPUT;
+      /* height can be zero here. */
+      if (height > 0 && width > 0)
+	{
+          BLOCK_INPUT;
+          x_clear_area (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f),
+                        0, y, width, height, False);
+          UNBLOCK_INPUT;
+        }

      if (WINDOWP (f->tool_bar_window))
 	clear_glyph_matrix (XWINDOW (f->tool_bar_window)->current_matrix);