ListValidType Example
InstallShield 2024 » InstallScript Language Reference
/*--------------------------------------------------------------*\
*
* InstallShield Example Script
*
* Demonstrates the ListValidType function.
*
\*---------------------------------------------------------------*/
// Include Ifx.h for built-in InstallScript function prototypes.
#include "Ifx.h"
function OnBegin()
LIST listID;
number nListValidType;
begin
// Create an empty string list.
listID = ListCreate (STRINGLIST);
// If an error occurred, report it; then terminate.
if (listID = LIST_NULL) then
MessageBox ("Unable to create list.", SEVERE);
abort;
endif;
// Check whether the list ID is valid and what type it is.
nListValidType = ListValidType (listID, NUMBERLIST);
if (nListValidType >= ISERR_SUCCESS) then
MessageBox ("List ID is valid and is a number list.",
INFORMATION);
else
nListValidType = ListValidType (listID, STRINGLIST);
if (nListValidType >= ISERR_SUCCESS) then
MessageBox ("List ID is valid and is a string list.",
INFORMATION);
else
MessageBox ("List ID is not valid.", INFORMATION);
endif;
endif;
// Remove the list from memory.
ListDestroy (listID);
// Check whether the list ID is valid and what type it is.
nListValidType = ListValidType (listID, NUMBERLIST);
if (nListValidType >= ISERR_SUCCESS) then
MessageBox ("List ID is valid and is a number list.",
INFORMATION);
else
nListValidType = ListValidType (listID, STRINGLIST);
if (nListValidType >= ISERR_SUCCESS) then
MessageBox ("List ID is valid and is a string list.",
INFORMATION);
else
MessageBox ("List ID is not valid.", INFORMATION);
endif;
endif;
// If you cut and paste this sample script into a project
// and run it, the following line aborts execution of the script.
abort;
end;