## Presentation Device Driver Reference for OS/2

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### DspDefaultResolution Parameter - pcbScreenResolution

pcbScreenResolution (PULONG) - input Points to the count of bytes in the pScreenResolution buffer. If pScreenResolution is NULL on input, the function will store the count of bytes needed to store all of the resolution data in pcbScreenResolution. If not ZERO, upon return, that field contains the number of bytes actually returned.