dSaveImageBMP (Function)

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Image found in a Web Camera control

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dSaveImageBMP (Function)

In french: dSauveImageBMP

Saves an image:

in a BMP file.
in memory.

This image corresponds to the image found:

in an Image control.
in a variable of type Image.
in a Bar Code control.
The Bar Code controls are not available in this version. Therefore, no image found in a Bar Code control can be saved.
in a Web Camera control.

Remarks:

Only the visible part of the Image control is saved.
This function can only be used to save the images for screen resolutions up to 32 bits.
This function cannot be used with the Image controls found in reports.

Caution: In Linux, this function requires a specific configuration. For more details, see Drawing in WINDEV, WEBDEV and WINDEV Mobile.

Example

See additional examples

// Sauve en mémoire l'image présente dans "IMG_ImageDessin"
ResSauvegarde = dSaveImageBMP(IMG_ImageDessin, inMemory)

// Sauve l'image présente dans "IMG_ImageDessin" sur "C:\Documents\Image.BMP"
ResSauvegarde = dSaveImageBMP(IMG_ImageDessin, "C:\Documents\Image.BMP")

Syntax

Saving an image in a file in BMP format Hide the details

<Result> = dSaveImageBMP(<Image> , <File name> [, <Number of colors>])

<Result>: Boolean

True if the image was saved,
False otherwise. To get more details on the error, use ErrorInfo with the errMessage constant.

<Image>: Name of the Image control or variable

Name of the Image, Bar Code or Web Camera control to be used. Image controls in a report cannot be used.
Name of the Image variable to be used.

<File name>: Character string

Name and full (or relative) path of BMP file to create. A UNC path can be used. The file extension is optional.
Caution:
The destination directory must exist in order for the image to be saved.
The existence of the BMP file is not checked. This file is automatically overwritten if it already exists.

<Number of colors>: Optional integer

Number of colors for the image saved:
0 (default): number of colors defined in screen resolution
16: 16 colors
This parameter corresponds to the number of colors proposed in the color palette when using the BMP file.

Saving an image in memory Hide the details

<Result> = dSaveImageBMP(<Image> , <inMemory> [, <Number of colors>])

<Result>: Buffer

Byte string containing the image in BMP format. Then this byte string can be assigned to an Image control, saved in a file (fSaveText), sent via a network (with the Socket functions), ...

<Image>: Name of the Image control or variable

Name of the Image, Bar Code or Web Camera control to be used. Image controls in a report cannot be used.
Name of the Image variable to be used.

<inMemory>: Constant

inMemory: Constant used to save an image in memory.

<Number of colors>: Optional integer

Number of colors for the image saved:
0 (default): number of colors defined in the screen resolution.
16: 16 colors.
This parameter corresponds to the number of colors proposed in the color palette when using the BMP file.

Remarks

Image found in a Web Camera control

Only the image displayed when dSaveImageBMP is executed is saved. To save this image, you can also use:

the VideoCapture function: the image will be saved in BMP format
the dSaveImageGIF function: the image will be saved either in Gif format or in memory.
the dSaveImageJPEG function: the image will be saved either in Jpeg format or in memory.
the dSaveImagePNG function: the image will be saved either in PNG format or in memory

Component: wd300pnt.dll