Workstation Specific Resources

 The following resources are used in order to control the graphical aspects of the program.

Please note that not all of these resource values are supported on all workstations.

• Default Visual Class

  DefaultVisual is used in order to force the Motif driver to use the specified visual class rather than leaving it to select the best visual class. Note that the driver will only use the specified class if it is adequate.

  Normally, the driver will try to use the default visual class. If this is inadequate then a warning will be printed and the driver will try to find the best visual class. DefaultVisual may be assigned the value NONE, indicating that the default visual should not be used automatically; or it may be assigned a hexadecimal number, in the format 0xnnn, indicating that the visual with the VisualID number given should be used. The VisualID numbers available on a particular machine can be ascertained by using the FV_DEBUG environment variable or the -Debug command line resource.

• Colour Control

  Where possible, FEMGV will try to share it's colours with other applications which may be running on the workstation. This can lead to the situation where FEMGV is unable to find a suitable match for a particular colour. If ExactColours is set to true then FEMGV will simply set the workstation colour table to match it's requirements, possibly causing other applications to be displayed in false colours. ExactColours is false by default.

  Note that the OpenGL driver will always set the required colours as if ExactColours had been set to true. This behaviour may be changed by setting the resource NoExactColours to the true.

• Window Size and Position

  Geometry may be used in order to specify the required initial window geometry. The geometry is expressed as a string in the form

     widthxheight+right+down
  

  For example, the string 350x400+200+10, requests a window 350 pixels wide by 400 high positioned with the top left hand corner 200 pixels to the right and 10 pixels down from the top left hand corner of the screen.

  The values specified will be modified, if necessary, to ensure that the initial window is completely visible on the screen.

  Geometry may be used to specify just the size or just the position or both. If both are specified then they must appear in the order, size then position.

  By default, the width and height of the initial window will be set to 60$\%$ of the screen width and height. The top left hand corner of the window will be positioned at the top left hand corner of the screen.