Name

Type

Optional

Meaning

ControlName

String

Yes

Optional name for the control.

This name must be globally unique, and is used to create a global variable to be used with control name methods and properties.

hwnd

Number

No

Handle of the dialog containing the control

ctrlID

Number

No

Control identifier

Caption

String

No

Can be used to indicate initial grid values and setup. See reference table.

xPos

Number

No

Horizontal position of the control inside the dialog

yPos

Number

No

Vertical position of the control inside the dialog

Width

Number

No

Control width

Height

Number

No

Control height

Style

Number

Yes

Primary style of the control.

ExStyle

Number

Yes

Extended style of the control.

CallBack

Function

Yes

Optional name of a Callback Function that receives all %WM_COMMAND and %WM_NOTIFY messages for the control.

If a callback for the control is not designated, you must create a dialog Callback Function to process messages from your control.

If the Callback Function processes a message, it should return %TRUE (non-zero) to prevent the message being passed unnecessarily to the dialog callback (if one exists). The dialog callback should also return %TRUE if the notification message is processed by that Callback Function.