How do I know the current width of system scrollbar?
C#WinformsC# Problem Overview
As you know, one can customize the width of the scrollbar width in Display Properties -> Appearance -> Advanced -> Item: ScrollBar. The default value is 17. However, I can't assume this is always the case, is it possible for me to retrieve this value?
C# Solutions
Solution 1 - C#
Look at the System.Windows.Forms.SystemInformation class members: HorizontalScrollBarHeight and VerticalScrollBarWidth.
Solution 2 - C#
Vertical Scroll Bar Width
System.Windows.Forms.SystemInformation.VerticalScrollBarWidth;
Solution 3 - C#
If you want to know the size of a ScrollableControl minus the size of the scroll bar, the easiest way is to use the Control.ClientSize property.
From the documentation:
> Gets or sets the height and width of the client area of the control. The client area of a control is the bounds of the control, minus the nonclient elements such as scroll bars, borders, title bars, and menus.
Solution 4 - C#
Skip the ClientSize property of the control. At least in VS2013 the Scrollbar is included in the ClientSize.
When I formatted a RichTextBox with a width of 304 and a vertical scrollbar, the Client Size width was 300, which only accounted for the borders.
stick with the System.Windows.Forms.SystemInformation.VerticalScrollBarWidth to get your scrollbar width.