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winapicomboboxcontrolsmessage

what is ComboBox message 359 0x167?

I cannot find this info anywhere, including in the official Windows API documentation. It is sent to the subclassing procedure when the control loses focus. It is not defined in winuser.h.

It is sent like this:

0x02D - WM_DELETEITEM
0x167 - ???
0x202 - WM_LBUTTONUP

My compiler is MinGW, system Windows XP SP3.

Solution

  • 0x167 is in the range of messages that is reserved for system use. Messages in this range that are not explicitly defined in the SDK are private for the system's internal use. This is stated as much in the documentation:

    #define WM_USER 0x0400

    .

    0 through WM_USER –1

    Messages reserved for use by the system.

    Message numbers in the first range (0 through WM_USER –1) are defined by the system. Values in this range that are not explicitly defined are reserved by the system.