CBM ISLISTSHOWING: Difference between revisions
Created page with "This message determines if the list box control is showing. ==Syntax== <PRE> param1 ULONG ulReserved; →Reserved value, should be 0.: param2 ULONG ulReserved; →Reserved value, should be 0.: </PRE> ==Parameters== ;ulReserved (ULONG) - Input : Reserved value, should be 0. ;ulReserved (ULONG) - Input : Reserved value, should be 0. ==Returns== ;rc (BOOL) - returns : Showing indicator. ::TRUE: The list box control is showing. ::FALSE: The list box co..." |
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Latest revision as of 23:31, 20 April 2025
This message determines if the list box control is showing.
Syntax
param1 ULONG ulReserved; /* Reserved value, should be 0. */ param2 ULONG ulReserved; /* Reserved value, should be 0. */
Parameters
- ulReserved (ULONG) - Input
- Reserved value, should be 0.
- ulReserved (ULONG) - Input
- Reserved value, should be 0.
Returns
- rc (BOOL) - returns
- Showing indicator.
- TRUE: The list box control is showing.
- FALSE: The list box control is not showing.
Remarks
The combo box control window procedure responds to this message by indicating if the list box control is showing.
Default Processing
The default window procedure does not expect to receive this message and therefore takes no action on it other than to set rc to the default value of FALSE.