Hi guys!
I'm a newbie in the use of witty! I've found some problems in the use of
the WButtonGroup class. I'm using the version wt-2.99.3 of the
libraries. My problem is in the use of the function setCheckedButton to
choose the button I want to be checked.
I attach an example I made inspired by the example of the documentation
of WButtonGroup.
In the WlineEdit it is asked to insert the number of the button to
check. When it is pressed enter the relative button should be checked.
The problem is that it only work with button number 3 (NoVote).
I cannot understand what is wrong.
Can you help me!
Thank you
Stefano
/*
* main.cpp
*
*/
#include <Wt/WApplication>
#include <Wt/WBreak>
#include <Wt/WContainerWidget>
#include <Wt/WLineEdit>
#include <Wt/WPushButton>
#include <Wt/WText>
#include <Wt/WRadioButton>
#include <Wt/WButtonGroup>
#include <Wt/WGroupBox>
#include <Wt/WIntValidator>
#include <iostream>
#include <fstream>
#include <iomanip>
#include <sstream>
using namespace std ;
using namespace Wt;
enum Vote { Republican = 1, Democrate = 2, NoVote = 10 };
class HelloApplication : public WApplication
{
public:
HelloApplication(const WEnvironment& env);
private:
WLineEdit *nameEdit_;
WText *greeting_;
WButtonGroup *group_ ;
void selectButton();
void update() ;
};
HelloApplication::HelloApplication(const WEnvironment& env)
: WApplication(env)
{
// use a button group to logically group the 3 options
group_ = new WButtonGroup(this);
WRadioButton *button;
button = new WRadioButton("I voted Republican", root());
new WBreak(root());
group_->addButton(button, Republican);
button = new WRadioButton("I voted Democrat", root());
new WBreak(root());
group_->addButton(button, Democrate);
button = new WRadioButton("I didn't vote", root());
new WBreak(root());
group_->addButton(button, NoVote);
new WBreak(root());
root()->addWidget(new WText (WString::fromUTF8("Which button should I check? "))) ;
nameEdit_ = new WLineEdit(root());
new WBreak(root());
greeting_ = new WText(root()); // empty text
WIntValidator *dvCheck = new WIntValidator(1,3);
dvCheck->setMandatory(true);
nameEdit_->setValidator(dvCheck);
nameEdit_->enterPressed().connect(SLOT(this, HelloApplication::selectButton));
update() ;
}
void HelloApplication::selectButton() {
ostringstream buffer(ostringstream::out);
int bs=atoi(nameEdit_->text().narrow().c_str());
switch (bs) {
case 1:
group_->setCheckedButton(group_->button(Republican)) ;
cerr << "Republican" << endl ;
break ;
case 2:
group_->setCheckedButton(group_->button(Democrate)) ;
cerr << "Democrate" << endl ;
break ;
case 3:
group_->setCheckedButton(group_->button(NoVote)) ;
cerr << "NoVote" << endl ;
break ;
default:
buffer.str("");
buffer << "Checkable button from 1 to 3" ;
greeting_->setText(WString::fromUTF8(buffer.str()));
return ;
}
buffer.str("");
buffer << "Checked button: " << group_->checkedId() ;
greeting_->setText(WString::fromUTF8(buffer.str()));
}
void HelloApplication::update() {
// update by checking the Republican button
group_->setCheckedButton(group_->button(Republican)) ;
}
WApplication *createApplication(const WEnvironment& env)
{
return new HelloApplication(env);
}
int main(int argc, char **argv)
{
return WRun(argc, argv, &createApplication);
}
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