Expand and collapse the container area of group box with the default indicator or a custom expansion indicator.

Apply various visual enhancements to the WinGroupBox and WinExpandableGroupox such as:

• Appearance support - Full Appearance support including alpha-blending, nine-slice scaling, gradients and images
• BorderStyle - The control offers a wide range of border styles to suit your needs
• CaptionAlignment - Determines the position of the caption within the header
• HeaderBorderStyle - Controls the type of border drawn around the header
• HeaderPosition - Allows you to make the header (including the caption text) vertical or horizontal
• UseMnemonic - Determines whether a character preceded by an ampersand in the button's text is interpreted as a mnemonic character for accelerator keys
• WrapText - The caption will become multi-line if the control is not wide enough to display it on a single line