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Reference Guides / JavaScript API / Events / RegisterOnTwainAcquisitionDialogCancelButtonClick


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This function allows you to trigger a function of your own when the Cancel button from the TWAIN acquisition dialog is clicked.

RegisterOnTwainAcquisitionDialogCancelButtonClick: function (docuViewareID, callback)


The identifier for the DocuVieware™ instance.
The function you want to execute on event.

Return Value

1 if error.

Example of usage

This JavaScript makes sure the DocuVieware control is properly loaded and initialized and then subscribes to the event on load.

function RegisterOnTwainAcquisitionDialogCancelButtonClickOnDocuViewareAPIReady() {
    if (typeof DocuViewareAPI !== "undefined" && DocuViewareAPI.IsInitialized("DocuVieware1")) {
        DocuViewareAPI.RegisterOnTwainAcquisitionDialogCancelButtonClick("DocuVieware1", function () { console.log("acquisition dialog canceled"); });
    else {
        setTimeout(function () { RegisterOnTwainAcquisitionDialogCancelButtonClickOnDocuViewareAPIReady() }, 10);
document.addEventListener("DOMContentLoaded", function () {
}, false);