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WM NULL

From EDM2

This message is posted to activate message queues or modal loops.

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

ulReserved (ULONG) - returns
Reserved value, should be 0.

Remarks

On receiving this message, the application should simply let the default processing take place.

Default Processing

The default window procedure takes no action on this message, other than to set ulReserved to 0.

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