Point location = new Point(Convert.ToInt32((Width / 2) - len.Width / 2), Convert.ToInt32((Height / 2) - len.Height / 2)) Point location = new Point(Convert.ToInt32((rect.Width / 2) - (len.Width / 2)), Convert.ToInt32((rect.Height / 2) - (len.Height / 2))) Calculate the location of the text (the middle of progress bar) Using (Font f = new Font(FontFamily.GenericSerif, 14)) String text = DisplayStyle = ProgressBarDisplayText.Percentage ? Value.ToString() + '%' : CustomText

Set the Display text (Either a % amount or our custom text ProgressBarRenderer.DrawHorizontalChunks(g, clip) Rectangle clip = new Rectangle(rect.X, rect.Y, (int)Math.Round(((float)Value / Maximum) * rect.Width), rect.Height) As we doing this ourselves we need to draw the chunks on the progress bar Rect.Inflate(-3, -3) //here im getting the error ProgressBarRenderer.DrawHorizontalBar(g, rect) Protected override void OnPaint(PaintEventArgs e) SetStyle(ControlStyles.UserPaint | ControlStyles.AllPaintingInWmPaint | ControlStyles.OptimizedDoubleBuffer, true) Modify the ControlStyles flags -> OptimizedDoubleBuffer to avoid flickering text Public ProgressBarDisplayText DisplayStyle Property to set to decide whether to print a % or Text This is my custom control public class CustomProgressBar : ProgressBar Couldn't find any info about this, is there anyway around this? On windows 7 basic theme all is good but after i switch to windows classic im getting the above error.

the error is on the line Rectangle.Inflate(x,y) On which im running WinForms appl with a custom progress bar. Im running windows 7 embedded and to save on performance i change the visual styles from windows 7 basic to windows classic.

Visual styles 7