CB_GETLBTEXT message

Gets a string from the list of a combo box.

wParam

The zero-based index of the string to retrieve.

lParam

A pointer to the buffer that receives the string. The buffer must have sufficient space for the string and a terminating null character. You can send a CB_GETLBTEXTLEN message prior to the CB_GETLBTEXT message to retrieve the length, in TCHARs, of the string. If it is an ANSI string this is the number of bytes, but if it is a Unicode string this is the number of characters.

The return value is the length of the string, in TCHARs, excluding the terminating null character. If wParam does not specify a valid index, the return value is CB_ERR.

Security Warning: Using this message incorrectly can compromise the security of your program. This message does not provide a way for you to know the size of the buffer. If you use this message, first call CB_GETLBTEXTLEN to get the number of characters that are required and then call the message to retrieve the string. You should review the Security Considerations: Microsoft Windows Controls before continuing.

If you create the combo box with an owner-drawn style but without the CBS_HASSTRINGS style, the buffer pointed to by lParam receives the data associated with the item.

CB_GETLBTEXTLEN