EMBEDDED$: Difference between revisions

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{{PageParameters}}
{{PageParameters}}
; IMPORTANT
; IMPORTANT
:* The parameter {{Parameter|handle}} must be given as a literal string enclosed in quotes, variables cannot be used here.
:* The parameter {{Parameter|handle}} must be given as a {{Text|single literal string|red}} enclosed in quotes, variables cannot be used here.
:* The parameter will be checked while typing to ensure its validity, warnings (if any) will be displayed immediately in the IDE status area.
:* The parameter will be checked while typing to ensure its validity, warnings (if any) will be displayed immediately in the IDE status area.
* The {{Parameter|filedata$}} will receive the embedded file data as a single contiguous string, just as you would regularly [[OPEN]] the file and read its entire contents into that string.
* The {{Parameter|filedata$}} will receive the embedded file data as a single contiguous string, just as you would regularly [[OPEN]] the file and read its entire contents into that string.

Revision as of 09:13, 16 December 2023

The _EMBEDDED$ function is used to recall the data of a file which was earlier embedded into the EXE file using the $EMBED metacommand. You can roughly compare this to a RESTORE to any DATA block and then using READ to retrieve the data.


Syntax

filedata$ = _EMBEDDED$("handle")


Parameters

IMPORTANT
  • The parameter handle must be given as a single literal string enclosed in quotes, variables cannot be used here.
  • The parameter will be checked while typing to ensure its validity, warnings (if any) will be displayed immediately in the IDE status area.
  • The filedata$ will receive the embedded file data as a single contiguous string, just as you would regularly OPEN the file and read its entire contents into that string.
  • The handle is a unique case sensitive identifier beginning with a letter and only containing lower/upper case letters and/or numbers. It must exactly match the handle value used to $EMBED the respective file.
    • You can compare this identifier to the line label in front of a DATA block, which is later used in a RESTORE call to set the READ pointer to exactly that DATA block.


Description

  • Embedding files can be useful to deliver a program inclusive all required assets in just one EXE file.
  • No more worries whether a user installs your program correctly and retains the required folder structure.
  • If required, you can write the files back to disk, i.e. it could serve as an simple installer or package manager.
  • Embedded images, sounds or fonts can be passed directly to _LOADIMAGE, _SNDOPEN or _LOADFONT respectively when using the memory load capabilities of these functions.
  • To easily embed a file into your compiled EXE file use the $EMBED metacommand.


Availability


Examples

Example
Embeds two image files into the compiled EXE, then memory loads and displays it.
$EMBED:'source\peLogo.png','bigImg'
$EMBED:'source\qb64pe.png','smallImg'

SCREEN _NEWIMAGE(640, 480, 32)

bi& = _LOADIMAGE(_EMBEDDED$("bigImg"), 32, "memory")
si& = _LOADIMAGE(_EMBEDDED$("smallImg"), 32, "memory")

_PUTIMAGE (140, 180), bi&
_PUTIMAGE (410, 230), si&

_FREEIMAGE si&
_FREEIMAGE bi&

END
Code by RhoSigma


See also



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