Wt

hey,

WFileUpload does not emit signal uploaded if no file is selected a it does until wt-3.3.3. Moreover, once called WFileUpload::upload() whit no file selected you cannot use the file upload again even if you select a file.

Wt::WApplication* MyApp(const Wt::WEnvironment& env) {
    auto App(new WApplication(env));
    auto w = App->root();

    Wt::WFileUpload *upload = new Wt::WFileUpload(w);
    // Provide a button
    Wt::WPushButton *uploadButton = new Wt::WPushButton("Send", w);
    WText *FileName = new WText(w);
    // Upload when the button is clicked.
    uploadButton->clicked().connect(std::bind([=](){
        upload->upload();
//        uploadButton->disable();
    }));
    // Upload automatically when the user entered a file.
    // React to a successful upload.
    upload->uploaded().connect(std::bind([=](){
        cout << "uploaded emited" << endl;
        if (upload->empty()) {
            uploadButton->enable();
        }
        else {
            FileName->setText(upload->clientFileName());
        }
    }));
    return App;
}