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* The handle is a [[LONG]] integer value from the [[_SOURCE (function)|_SOURCE]] function or a handle created by [[_NEWIMAGE]]. | * The handle is a [[LONG]] integer value from the [[_SOURCE (function)|_SOURCE]] function or a handle created by [[_NEWIMAGE]]. | ||
* If the handle is designated as 0, it refers to the current [[SCREEN]] image. | * If the handle is designated as 0, it refers to the current [[SCREEN]] image. | ||
* A source image can only supply information to a program. [[POINT]] and [[GET (graphics statement)|GET]] might require a source other than the one currently active. | * A source image can only supply information to a program. [[POINT]] and [[GET (graphics statement)|GET]] might require a source other than the one currently active. | ||
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{{Cl|_SOURCE}} a | {{Cl|_SOURCE}} a | ||
{{Cl|_DEST}} 0 | {{Cl|_DEST}} 0 | ||
{{Cl|PRINT}} {{Cl|POINT}}(100, 100) | {{Cl|PRINT}} {{Cl|POINT}}(100, 100) | ||
{{CodeEnd}} | {{CodeEnd}} | ||
{{OutputStart}} | {{OutputStart}} | ||
Revision as of 02:45, 23 January 2023
The _SOURCE statement establishes the image SOURCE using a handle created by _LOADIMAGE, _NEWIMAGE or _COPYIMAGE.
Syntax
- _SOURCE handle&
Description
- The handle is a LONG integer value from the _SOURCE function or a handle created by _NEWIMAGE.
- If the handle is designated as 0, it refers to the current SCREEN image.
- A source image can only supply information to a program. POINT and GET might require a source other than the one currently active.
Examples
SCREEN 13 a = _NEWIMAGE(320,200,13) _DEST a PSET (100, 100), 15 _SOURCE a _DEST 0 PRINT POINT(100, 100) |
15 |
- Explanation: Create a new image with handle 'a', then use _DEST to define the image to draw on. Draw a pixel then set the source to 'a' and use POINT to show what color is in that position. White (15) and is the color set with PSET. Use _DEST 0 for the screen to display the results.
More examples
See the examples in:
See also