CPL_INIT message
Sent to the CPlApplet function of a Control Panel application to prompt it to perform global initialization, especially memory allocation.
CPlApplet(
hwndCPl,
CPL_INIT,
wParam, // = 0; not used, must be zero
lParam // = 0; not used, must be zero
);
-
wParam
- Must be zero.
-
lParam
- Must be zero.
If initialization succeeds, the CPlApplet function should return nonzero. Otherwise, it should return zero.
If CPlApplet returns zero, the controlling application ends communication and releases the DLL containing the Control Panel application.
Because this is the only way a Control Panel application can signal an error condition, the application should allocate memory in response to this message.
This message is sent immediately after the DLL containing the application is loaded.
Requirement | Value |
---|---|
Minimum supported client |
Windows XP [desktop apps only] |
Minimum supported server |
Windows 2000 Server [desktop apps only] |
Header |
|