![]() ![]() Good as JPG without losing image quality, known as " lossless compression".įirst, and usually only, choice in graphics files is PNG because of PNG files on the other hand offer a compression algorithm almost as JPGs are "blocky" in appearance which can lead to poor image quality. Because of JPG's compression algorithm many They both also support transparency, or a colorĬan be designated as invisible to allow other graphics to show through The only limit on the number, size, and dimensions of the images you load in is the amount of RAM a computer has.īoth very popular image file types, support 32 bit color and excellent ![]() Image relatedįigure 1 - The Sky Image Loaded by _LOADIMAGE To update images in the background while the user is viewing aĬompletely different image in the default window. Text and graphics statements to work with. (more on destination later) it becomes the default image surface for By making an image surface the destination If the image surface is currently the default screen or not as seen in Text statements but happens to be hidden from view. Think on an image surface created in memory with _NEWIMAGEĪs just another screen surface you can manipulate with graphics and The default output window using the SCREEN statement. The example cycles through the four surface images and makes each one Some identifying text and graphics to each image. Of the example creates the four surface images in memory and then adds To hold the handle value for four surface images. Line 5 in the example creates an array of long integers This example as MultipleScreens.BAS when completed. The following example illustrates howįour images can created and used as the output screen at any time. However, it's possible to use any image created by _NEWIMAGEĪs the default output screen. This image becomes the destination for any screen related statements to use. The SCREEN statement is being instructed to use the image in memory that _NEWIMAGE created as the default window. In all of the examples in previous tasks _NEWIMAGE has been used along with the SCREEN statement to create a new graphics window. ![]() ![]() The other modesĪre still useful however especially when converting legacy software to 32 - 16.7 million color graphics image surface (32bit)Ĭourse will focus on 32bit color image surfaces only.256 - 256 color graphics image surface (8bit).0 - a text screen (supply width& and height& as characters, not pixels).Mode% is the type of surface image to create and can be the following: Height& is the height in pixels of the new image surface. Width& is the width in pixels of the new image surface. Handle& = _NEWIMAGE( width&, height&, mode%) The _NEWIMAGE statement creates an image surface in memory and returns a long numeric value as a handle pointing to the image. ![]()
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