Content Type Constants You can use constants of type ControlContentType in the contentType field of the ControlButtonContentInfo structure to display various kinds of bevel button and image well content, including text, icons, and pictures. The ControlContentType constants are available with Appearance Manager 1.0 and later, except as noted. The content type is passed in the low byte of the minimumValue parameter of NewControl . The control definition function will not dispose of handle-based content.
Content type is text.
This constant is passed in the contentType field of the ControlButtonContentInfo structure if the content is text only. The variation code kControlUsesOwningWindowsFontVariant applies when text content is used. The resource ID of the icon suite resource you wish to display should be in the resID field of the ControlButtonContentInfo structure. The resource ID of the color icon resource you wish to display should be in the resID field of the ControlButtonContentInfo structure. The resource ID of the picture resource you wish to display should be in the resID field of the ControlButtonContentInfo structure.