BCGControlBar Pro for MFC
BOOL CBCGPAnimCtrl::Play ( UINT  uiFrameRate = 0)

Starts/continues playback

Nonzero if playback was started or continued successfully; otherwise 0.

Runs the animation with the new frame rate. If the frame rate value is 0, the parameter is ignored and animation continues with the old frame rate.

uiFrameRateThe new frame rate value, if 0 - this parameter is ignored