Fixed a crash which happened if the user disabled visual styles e.g. …

…with the 'Windows Classic' theme of Windows 7.
Belphemur · May 31, 2017 · aa48697 · aa48697
1 parent f851bfd
commit aa48697
Showing 1 changed file with 11 additions and 8 deletions.
diff --git a/SoundSwitch.UI.UserControls/TextProgressBar.cs b/SoundSwitch.UI.UserControls/TextProgressBar.cs
@@ -44,14 +44,18 @@ protected override void OnPaint(PaintEventArgs e)
             var rect = ClientRectangle;
             var g = e.Graphics;
 
-            ProgressBarRenderer.DrawHorizontalBar(g, rect);
-            rect.Inflate(-3, -3);
-            if (Value > 0)
+            // Validate that the user has enabled visual styles in the operating system
+            if (ProgressBarRenderer.IsSupported)
             {
-                // As we doing this ourselves we need to draw the chunks on the progress bar
-                var clip = new Rectangle(rect.X, rect.Y, (int)Math.Round(((float)Value / Maximum) * rect.Width),
-                    rect.Height);
-                ProgressBarRenderer.DrawHorizontalChunks(g, clip);
+                ProgressBarRenderer.DrawHorizontalBar(g, rect);
+                rect.Inflate(-3, -3);
+                if (Value > 0)
+                {
+                    // As we doing this ourselves we need to draw the chunks on the progress bar
+                    var clip = new Rectangle(rect.X, rect.Y, (int) Math.Round(((float) Value / Maximum) * rect.Width),
+                        rect.Height);
+                    ProgressBarRenderer.DrawHorizontalChunks(g, clip);
+                }
             }
 
             // Set the Display text (Either a % amount or our custom text
@@ -69,7 +73,6 @@ protected override void OnPaint(PaintEventArgs e)
                     break;
             }
 
-
             using (var f = new Font(FontFamily.GenericSansSerif, 8.25F))
             {
                 var len = g.MeasureString(text, f);