VIEW - mkilgore/QB64pe GitHub Wiki

The VIEW statement creates a graphics view port area by defining the coordinate limits to be viewed.

VIEW SCREEN] (column1, row1)-(column2, row2)[,][,]

• When the SCREEN option is used, all coordinates are absolute and only graphics within the viewport area are plotted.
• When the SCREEN option is not used, all coordinates are relative to the view port with the values of column1 and row1 being automatically added before plotting the point.
• Coordinate values are for the top left and bottom right values of a box area of the screen mode used.
• The color parameter specifies a background fill color for the area. None when omitted.
• Border requires any valid color attribute to draw a line around the VIEW area if there is room for it.
• VIEW without any parameters disables the previous viewport. RUN and SCREEN can also disable any VIEW port.
• CLS or CLS 1 clears the active graphics VIEW port area only. Disable a viewport before attempting to clear the entire screen!
• Note: QB64 RUN statements will not close VIEW PRINT, VIEW or WINDOW view ports presently!

 SCREEN 12
 VIEW SCREEN (200, 200)-(400, 400), 1, 9 ' blue BG with light blue border
 CIRCLE (220, 220), 20, 11 ' using the actual screen coordinates

Example 2: Using coordinates relative to the viewport box area.

 SCREEN 12
 VIEW (200, 200)-(400, 400), 1, 9 
 CIRCLE (20, 20), 20, 11 ' using coordinates inside of the viewport

Explanation: The relative coordinates are automatically adjusted to place the object correctly. Any values outside of the box's area will not be displayed. Both examples should display the same screen image.

• VIEW PRINT (text view port)
• WINDOW (window view port)
• SCREEN, CLS