Difference between revisions of "NEWIMAGE"

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* If BPPmode is omitted, an image will be created in the same BPP mode as the current destination image.
 
* If BPPmode is omitted, an image will be created in the same BPP mode as the current destination image.
 
* Valid {{KW|LONG}} handle returns are less than -1. Invalid handles equal -1.
 
* Valid {{KW|LONG}} handle returns are less than -1. Invalid handles equal -1.
* You can create any sized window(limited by OS) using this function.  
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* You can create any sized window(limited by OS) using this function.
 +
* It is IMPORTANT to free previous images with {{KW|_FREEIMAGE}} when replacing with a new image to prevent memory errors!
  
  

Revision as of 17:44, 11 June 2010

The _NEWIMAGE Function prepares a window image surface and returns the handle value.


Syntax

handle& = _NEWIMAGE& (width AS LONG, height AS LONG[, BPPmode AS LONG])


Description

  • Width& >= 0, Height& >= 1 measured in pixels.
  • BPPmode& is either a QB type screenmode(0 to 2 or 7 to 13) or 256 colors or 32 bit compatible.
  • If BPPmode is omitted, an image will be created in the same BPP mode as the current destination image.
  • Valid LONG handle returns are less than -1. Invalid handles equal -1.
  • You can create any sized window(limited by OS) using this function.
  • It is IMPORTANT to free previous images with _FREEIMAGE when replacing with a new image to prevent memory errors!


Examples

1) Shrinking a SCREEN 0 text window's size:

SCREEN _NEWIMAGE(28, 25, 0)


2) Creating a 800 by 600 window version of SCREEN 12 with 256 colors:

handle& = _NEWIMAGE(800, 600, 256) SCREEN handle&



See also




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