ImgProcessExternal

Prototype

intResult:=ImgProcessExternal (intImageHandle,strDLLName,strCustomData)

Description

It makes a processing operation on the image using an external DLL where is implemented an image processing function.

The DLL can be written with every programming language if export a "Process" function with standard call style accepting as parameter a 32 bit integer (the DIB handle) and a string pointer  (the custom initialiting parameters):

Here a C/C++ declaration sample:

int Process(int handle, char *parameters)

Here a Pascal/Delphi declaration sample:

function Process(handle: integer; parameters:pchar):integer

The function need to give as result an integer with a custom value as a new DIB handle, a numerical parameter extracted from image or an exit code.

Parameters

ImageHandle: numerical value with image handle.

strDLLName: the name of DLL to call.

strCustomData: string with custom  value to pass to this function.

Returned value

The result is an integer with the DIB handle, a numerical parameter extracted from image or an exit code.

Example

// Retrieve the DIB handle from current image

DIBhandle:=ImgGetDIBHandle(_CurrentImage);

// Call the image processing function implemented in the external DLL

Status:=ImgProcessExternal( DIBhandle,'INVERTDIB.DLL','MyCustomData');