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FeatureError Example

InstallShield 2014 » InstallScript Language Reference

/*--------------------------------------------------------------*\

*

* InstallShield Example Script

*

* Demonstrates the FeatureError function.

*

* This example script demonstrates a function that adds a feature

* to a script-created feature set.

*

*  Comments:  To run this example script, create a project (or

*             insert into a project) with several features and/or

*             subfeatures with components containing files.

*

\*--------------------------------------------------------------*/

// Include Ifx.h for built-in InstallScript function prototypes.

#include "Ifx.h"

// Include iswi.h for Windows Installer API function prototypes and constants,

// and to declare code for the OnBegin and OnEnd events.

#include "iswi.h"

// The keyword export identifies MyFunction() as an entry-point function.

// The argument it accepts must be a handle to the Installer database.

   export prototype MyFunction(HWND);

   prototype HandleMoveDataError(number);

// To Do:  Declare global variables, define constants, and prototype user-

//         defined and DLL functions here.

function MyFunction(hMSI)

    STRING  szTitle, szMsg;

    NUMBER  listID, nResult;

begin

    szTitle = "List MEDIA Features";

    szMsg   = "MEDIA contains the following top-level features:";

    // Initialize the string list.

    listID = ListCreate (STRINGLIST);

    // Create a list of top-level features in the specified media.

    nResult = FeatureListItems (MEDIA, "", listID);

    // Call the error handler function.

    HandleMoveDataError (nResult);

    // Display a list of top-level features.

    SdShowInfoList (szTitle, szMsg, listID);    

end;    

function HandleMoveDataError(nResult)  

    STRING szErrMsg, svFeature , svComponent , svFile;

begin

    svFeature = "";

    svComponent = "";

    svFile = "";

    // In cases where FeatureListItems returns a value not equal to zero, display an  

    // error message.

    switch (nResult)

        case 0:

            return 0;

        default:

            FeatureError (MEDIA , svFeature , svComponent , svFile , nResult);

            szErrMsg = "An error occurred during the process: %d"  + "\n\n" +

                "Feature: " + svFeature + "\n" +

                "Component: " + svComponent + "\n" +

                "File: " + svFile;

            SprintfBox (SEVERE, "", szErrMsg, nResult);

            return nResult;

    endswitch;

end;