Sent to the CPlApplet function of a Control Panel application when the user double-clicks the icon of a dialog box supported by the application.
The dialog box number. This number must be in the range zero through one less than the value returned in response to the CPL_GETCOUNT message (CPL_GETCOUNT – 1).
The value that the Control Panel application loaded into the lpData member of the CPLINFO or NEWCPLINFO structure for the dialog box. The application loads the lpData member in response to the CPL_INQUIRE or CPL_NEWINQUIRE message.
If the CPlApplet function processes this message successfully, the return value is zero; otherwise, it is nonzero.
In response to this message, a Control Panel application must display the corresponding dialog box.
Minimum supported client
|Windows XP [desktop apps only]|
Minimum supported server
|Windows 2000 Server [desktop apps only]|