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 WINDEV, WEBDEV AND WINDEV MOBILE
  • Operating mode in Windows Vista (and later)
WINDEV
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Stored procedures
Loads the content of an external file (text, image, ...) in a buffer variable.
Example
WINDEVUser code (UMC)
MyBuffer is Buffer
MyBuffer = fLoadBuffer("c:\tmp\MyFile.raw")
WINDEVUser code (UMC)
// Read the first 50 bytes of the file from the beginning
MyBuffer is Buffer
MyBuffer = fLoadBuffer("C:\Dir\Fic.test", 0, 50)
Syntax
<Result> = fLoadBuffer(<External file> [, <Position> [, <Size>]])
<Result>: Buffer
Content of text file.
<External file>: Character string
Name and full (or relative) path of external file (text, image, ...). A UNC path can be used. This file is not necessarily a file in TXT format: indeed, the binary zeros are allowed.
<Position>: Optional integer
Position from which the text file must be loaded. This position is expressed in bytes (or in number of characters).
This parameters corresponds to 0 (beginning of file) by default.
Java This parameter is not available.
<Size>: Optional integer
Maximum size of the file to load. This size is expressed in bytes (or in number of characters).
By default, this size corresponds to the total size of the file.
Java This parameter is not available.
Remarks
WINDEVUser code (UMC)

Operating mode in Windows Vista (and later)

If this function does not operate properly in Windows Vista (and later), check whether the file or directory used is not in one of the system directories (Windows directory or "Program Files" directory).
In Windows Vista (and later), with the UAC mechanism (User Account Control) enabled, you must have administrator privileges to handle and/or modify the files or directories in system directories (Windows directory or "Program Files" directory).
Programming tip: To handle and/or modify the files or directories without administrator privileges, you should:
  • avoid writing to the Windows directory or to the "Program Files" directory,
  • use the system directory of the application (returned by SysDir with the srAppDataCommun constant, for example).
Component: wd280std.dll
See also
Minimum version required
  • Version 16
This page is also available for…
Comments
Seleciona Imagem e Resize
PROCEDURE SelecionaImagem(Janela, ControleImagem,bResize is boolean)

bufImagebuffer is Buffer

sFile is string = fSelect("c:\", "Selecione uma Foto...", "Todos os arquivos (*.*)" + TAB + "*.*" + CR + "PNG" + TAB + "*.PNG" + CR + "JPEG" + TAB + "*.JPEG" + CR + "JPG" + TAB + "*.JPG", "*.*")

IF fFileExist(sFile) = True

bufImagebuffer = fLoadBuffer(sFile)

sControlTelaImg is string = Janela +"."+ ControleImagem //monta a string do indirection

{sControlTelaImg,indControl} = bufImagebuffer

IF bResize = True

dResize({sControlTelaImg,indControl},{sControlTelaImg,indControl}..Width,{sControlTelaImg,indControl}..Height,drHomotheticCentered)

END

ELSE

Info("Nenhum arquivo selecionado!")

END

RESULT bufImagebuffer
//CASE ERROR:
//
CASE EXCEPTION:
BOLLER
23 Mar. 2019
Como usar a procedure SelecionaImagem
IMG_LogoCompany = SelecionaImagem("WIN_GPU_02_Menu","IMG_LogoCompany",True)
BOLLER
23 Mar. 2019