Type: | Control attribute |
Description: | A four-byte value that is passed to the control callback function. The value can be a pointer to user data. |
Control Types: | ActiveX controls, binary switches, canvases, color numerics, command buttons, decorations, digital graphs, graphs, LEDs, list boxes, numerics, picture buttons, picture rings, pictures, radio buttons, rings, numeric slides, ring slides, splitters, strings, strip charts, tab controls, tables, text boxes, text buttons, text messages, timers, toggle buttons, trees. |
Data Type: | pointer |
Default Value: | NULL |