QtForum.org »
QtForum.org »- Qt »
Qt Programming »
Dear visitor, welcome to QtForum.org. If this is your first visit here, please read the Help. It explains how this page works. You must be registered before you can use all the page's features. Please use the registration form, to register here or read more information about the registration process. If you are already registered, please login here.
Saturday, May 10th 2008, 7:17pm
Reset Button not working!
Hi,
I tried to post this question in other section of QtForum and decided to try again
First i will post the code:
Why can't i change the Red slider value to 33 when i press "botaoreset"? (see line 58 )
Must be a stupid question but i need the answer to start lerning QT.
Thanks
I tried to post this question in other section of QtForum and decided to try again
First i will post the code:
|
Source code |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 |
#include <QApplication>
#include <QHBoxLayout>
#include <QVBoxLayout>
#include <QPushButton>
#include <QLabel>
#include <QSpinBox>
#include <QSlider>
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QWidget *janela = new QWidget;
janela->setWindowTitle("Modelo RGB!");
QPushButton *botaosair = new QPushButton("Sair");
QPushButton *botaoreset = new QPushButton("Reset");
QLabel *textoRed = new QLabel("Red");
QLabel *textoGreen = new QLabel("Green");
QLabel *textoBlue = new QLabel("Blue");
QSpinBox *spinBoxRed = new QSpinBox;
QSpinBox *spinBoxGreen = new QSpinBox;
QSpinBox *spinBoxBlue = new QSpinBox;
spinBoxRed->setRange(0,255);
spinBoxGreen->setRange(0,255);
spinBoxBlue->setRange(0,255);
QSlider *sliderRed = new QSlider(Qt::Horizontal);
QSlider *sliderGreen = new QSlider(Qt::Horizontal);
QSlider *sliderBlue = new QSlider(Qt::Horizontal);
sliderRed->setRange(0,255);
sliderGreen->setRange(0,255);
sliderBlue->setRange(0,255);
//Signals and slots
QObject::connect( spinBoxRed, SIGNAL(valueChanged(int)),
sliderRed, SLOT(setValue(int)));
QObject::connect( sliderRed, SIGNAL(valueChanged(int)),
spinBoxRed, SLOT(setValue(int)));
QObject::connect( spinBoxGreen, SIGNAL(valueChanged(int)),
sliderGreen, SLOT(setValue(int)));
QObject::connect( sliderGreen, SIGNAL(valueChanged(int)),
spinBoxGreen, SLOT(setValue(int)));
QObject::connect( spinBoxBlue, SIGNAL(valueChanged(int)),
sliderBlue, SLOT(setValue(int)));
QObject::connect( sliderBlue, SIGNAL(valueChanged(int)),
spinBoxBlue, SLOT(setValue(int)));
QObject::connect( botaosair, SIGNAL(clicked()),
&app, SLOT(quit()));
QObject::connect( botaoreset, SIGNAL(clicked()),
sliderRed, SLOT(setValue(33)));
sliderRed->setValue(100);
sliderGreen->setValue(100);
sliderBlue->setValue(100);
//layouts
QVBoxLayout *cores = new QVBoxLayout;
cores->addWidget(textoRed);
cores->addWidget(textoGreen);
cores->addWidget(textoBlue);
QVBoxLayout *spinbox = new QVBoxLayout;
spinbox->addWidget(spinBoxRed);
spinbox->addWidget(spinBoxGreen);
spinbox->addWidget(spinBoxBlue);
QVBoxLayout *slider = new QVBoxLayout;
slider->addWidget(sliderRed);
slider->addWidget(sliderGreen);
slider->addWidget(sliderBlue);
QHBoxLayout *layoutRGB = new QHBoxLayout;
layoutRGB->addItem(cores);
layoutRGB->addItem(spinbox);
layoutRGB->addItem(slider);
QHBoxLayout *layoutControlo = new QHBoxLayout;
layoutControlo->addWidget(botaoreset);
layoutControlo->addWidget(botaosair);
QVBoxLayout *layoutjanela = new QVBoxLayout;
layoutjanela->addItem(layoutRGB);
layoutjanela->addItem(layoutControlo);
janela->setLayout(layoutjanela);
janela->show();
return app.exec();
}
|
Why can't i change the Red slider value to 33 when i press "botaoreset"? (see line 58 )
Must be a stupid question but i need the answer to start lerning QT.
Thanks
Graciano Torrão
