WM JOURNALNOTIFY

This message is used to maintain correct operation during journal playback.

Syntax

param1
    ULONG  ulCommand;     /* Command to journal. */

param2
    USHORT fsQueueStatus; /* Queue status. */
    USHORT usScanCode;    /* Scan code. */
    USHORT usKeyState;    /* Key State. */

Parameters

ulCommand (ULONG) - input

Command to journal.

JRN_QUEUESTATUS: The WinQueryQueueStatus command must be journaled.

JRN_PHYSKEYSTATE: The WinGetPhysKeyState command must be journaled.

fsQueueStatus (USHORT) - input

Queue status. See the parameter of the WinQueryQueueStatus function.

usScanCode (USHORT) - input

Scan code. See the parameter of the WinGetPhysKeyState function. param2 contains usScanCode and usKeyState if ulCommand has the value JRN_PHYSKEYSTATE.

usKeyState (USHORT) - input

Key State. See the parameter of the WinGetPhysKeyState function. param2 contains usScanCode and usKeyState if ulCommand has the value JRN_PHYSKEYSTATE.

ulReserved (ULONG) - input

Reserved value, should be 0.

Returns

ulReserved (ULONG) - returns

Reserved value, should be 0.

Remarks

If the WinQueryQueueStatus or the WinGetPhysKeyState functions have new information since the last time they were called and there is a journal record hook installed, the journal record hook is called with this message to record this new information.

During playback, this message is interpreted by the system and the appropriate state restored.

Data values of the param2 parameter depend on which command is to be journaled.

Default Processing

The default window procedure does not expect to receive this message and therefore takes no action on it, other than to set ulReserved to 0.