Image Viewer CP Gold SDK ActiveX Control ReferenceMethods Contrast Image Viewer CP ActiveX Control Contrast Add Contrast on image. Default is 100. You can input negative value. Public Function Contrast( _ ByVal iValue As Integer) Parameter iValue the value of contrast. (0-255)No Return ValueExample Visual Basic SyntaxImageViewer1.FileName ="c:\1.jpg"ImageViewer1.Contrast 150ImageViewer1.Contrast -50