GBM_SETSTATE - Parameters

usStateCode (USHORT)

State code.

GB_UP

Sets the graphic button to the Up state.
GB_DOWN
Sets the graphic button to the Down state.
GB_TOGGLE
Toggles the graphic buttons state from Up to Down or from Down to Up.

usRePaint (USHORT)

Indicates when change of state will occur.

TRUE

The change in state is reflected immediately onscreen.
FALSE
The change in state is not reflected immediately onscreen. The graphic button displays the change the next time it receives a BN_PAINT message.

rc (ULONG)

Return codes indicating success or failure.

TRUE

Success.
FALSE
Failure or not recognized.

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