## Virtual Device Driver Reference for OS/2

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### VDHIsVDMFrozen - Parameters

VDMHandle (HVDM) Handle to the DOS session in question.

rc (BOOL) - returns

Success If the DOS session is not frozen, the function returns 0 (zero). Otherwise, the function returns a nonzero value indicating the DOS session' s freeze count.

Failure If VDMHandle is an invalid DOS session handle, a system halt occurs .