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Description

 

Meta function automatically created by thinBasic engine and valid only inside Callback Functions.

 

This meta function is valid only inside a Callback Function,

It returns the numeric ID value of the  sending the callback message.

 

Syntax

 

id = CBCTL

alias

id = Callback_Control

 

Returns

 

Number.

 

Remarks

 

When a user clicks on a button, types into a text box, or generally interacts with any control in a dialog, Windows sends a message to the callback for the control (or the dialog if the control does not have a callback). CBCTL returns the ID number as assigned to the control with the CONTROL ADD statement.

CBCTL will return the ID of a control if CBMSG = %WM_COMMAND. For other values of CBMSG, CBCTL will return message-dependent values.

 

Restrictions

 

This function is only valid inside a Callback Function.

 

See also

 

Examples