ViewerControl

The ViewerControl function allows to query and control the state of the internal viewer.

int WINAPI ViewerControl(
  int Command,
  void *Param
);

Command

Control command type. Can be one of the following (VIEWER_CONTROL_COMMANDS enum):

Command	Description
VCTL_GETINFO	Gets viewer information. Param points to a ViewerInfo structure. This command always returns `TRUE`.
VCTL_QUIT	Close the viewer. `Param` must be `NULL`. This command always returns `TRUE`.
VCTL_REDRAW	Redraws the viewer window. `Param` must be `NULL`. This command always returns `TRUE`.
VCTL_SETKEYBAR	Allows to control key bar titles in the viewer: `Param` = NULL - restores the previous value `Param` = -1 - redraws the key bar `Param` = pointer to a KeyBarTitles structure. This command always returns `TRUE`.
VCTL_SELECT	Controls selection. `Param` points to a ViewerSelect structure. If `Param` = NULL, selection will be reset. If the command succeeds `TRUE` is returned.
VCTL_SETMODE	Change viewer mode. `Param` points to a ViewerSetMode structure. If the command succeeds `TRUE` is returned.
VCTL_SETPOSITION	Sets position in file. `Param` points to an ViewerSetPosition structure. If the command succeeds `TRUE` is returned.

Param

Read the description of the Command parameter for concrete information.

Read the description of the Command parameter for concrete information.

In FAR 1.70 build 1579 and newer VCTL_QUIT when send from an information or a qiuck view panel does not close the viewer.