To determine whether the layout of a document can be changed, use the VAPIMWP_VIEW_CANLAYOUT message.
To get the current layout of a document, use the VAPIMWP_VIEW_GETLAYOUT message.
To set the layout of a document, use the VAPIMWP_VIEW_SETLAYOUT message.
To determine whether a document can be inverted, use the VAPIMWP_VIEW_CANINVERT message.
To get the current invert state of a document, use the VAPIMWP_VIEW_GETINVERT message.
To set the invert state of a document, use the VAPIMWP_VIEW_SETINVERT message.
To determine whether a document can be rotated, use the VAPIMWP_VIEW_CANROTATE message.
To get the current rotation of a document, use the VAPIMWP_VIEW_GETROTATE message.
To set the rotation of a document, use the VAPIMWP_VIEW_SETROTATE message.
To determine whether a document can be magnified, use the VAPIMWP_VIEW_CANMAGNIFY message.
To determine whether a document can be magnified to fit the document selection to the window, use the VAPIMWP_VIEW_CANFITTOWINDOW message.
To get the current magnification of a document, use the VAPIMWP_VIEW_GETMAGNIFY message.
To set the magnification of a document, use the VAPIMWP_VIEW_SETMAGNIFY message.
To determine whether a multimedia document can be played, use the VAPIMWP_VIEW_CANPLAY message.
To play a multimedia document, use the VAPIMWP_VIEW_PLAY message.
To determine whether the playing of a multimedia document can be paused, use the VAPIMWP_VIEW_CANPAUSE message.
To pause the playing of a multimedia document, use VAPIMWP_VIEW_PAUSE .
To determine whether the playing of a multimedia document can be stopped, use the VAPIMWP_VIEW_CANSTOP message.
To stop the playing of a multimedia document, use the VAPIMWP_VIEW_STOP message.
To get the play mode (that is, to stop or loop at the end of a multimedia document after playing it), use the VAPIMWP_VIEW_GETPLAYMODE message.
To set the play mode of a multimedia document to stop at the end after playing it, use the VAPIMWP_VIEW_END message.
To set the play mode of a multimedia document to loop at the end after playing it, use the VAPIMWP_VIEW_LOOP message.
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