我已經做到了,但是我發佈了需要此功能的人。這是一個對話框的示例,用於調整圖像的大小。更準確地說,它代表用戶當前的圖像大小,併爲他/她提供一個界面來改變尺寸並用QPair獲得新的尺寸。
class ResizeImageDialog : public QDialog
{
Q_OBJECT
double m_ratio;
QLabel *m_widthLabel;
QLabel *m_hightLabel;
QDoubleSpinBox *m_widthSpinBox;
QDoubleSpinBox *m_hightSpinBox;
QCheckBox *m_keepRatioCheckBox;
QPushButton *m_okButton;
QPushButton *m_cancelButton;
QHBoxLayout *m_widthLayout;
QHBoxLayout *m_hightLayout;
QHBoxLayout *m_buttonLayout;
QVBoxLayout *m_generalLayout;
private slots:
void widthChanged(double width);
void hightChanged(double hight);
public:
ResizeImageDialog(QWidget * parent = 0, double imageWidth = 100.0, double imageHight = 100.0):QDialog(parent)
{
m_widthLabel = new QLabel("Image width");
m_hightLabel = new QLabel("Image hight");
m_widthSpinBox = new QDoubleSpinBox;
m_widthSpinBox->setMaximum(1500);
m_widthSpinBox->setValue(imageWidth);
connect(m_widthSpinBox, SIGNAL(valueChanged(double)), this, SLOT(widthChanged(double)));
m_hightSpinBox = new QDoubleSpinBox;
m_hightSpinBox->setMaximum(1500);
m_hightSpinBox->setValue(imageHight);
connect(m_hightSpinBox, SIGNAL(valueChanged(double)), this, SLOT(hightChanged(double)));
m_ratio = imageWidth/imageHight;
m_keepRatioCheckBox = new QCheckBox("Keep ratio",this);
m_keepRatioCheckBox->setChecked(true);
m_widthLayout = new QHBoxLayout;
m_widthLayout->addWidget(m_widthLabel);
m_widthLayout->addWidget(m_widthSpinBox);
m_hightLayout = new QHBoxLayout;
m_hightLayout->addWidget(m_hightLabel);
m_hightLayout->addWidget(m_hightSpinBox);
m_okButton = new QPushButton("OK");
connect(m_okButton, SIGNAL(clicked()), this, SLOT(accept()));
m_cancelButton = new QPushButton("Cancel");
connect(m_cancelButton, SIGNAL(clicked()), this, SLOT(reject()));
m_buttonLayout = new QHBoxLayout;
m_buttonLayout->addStretch();
m_buttonLayout->addWidget(m_okButton);
m_buttonLayout->addWidget(m_cancelButton);
m_generalLayout = new QVBoxLayout;
m_generalLayout->addLayout(m_widthLayout);
m_generalLayout->addLayout(m_hightLayout);
m_generalLayout->addWidget(m_keepRatioCheckBox);
m_generalLayout->addLayout(m_buttonLayout);
setLayout(m_generalLayout);
setMaximumSize(300, 300);
setModal(true);
//resize(670,630);
setWindowTitle(tr("Resize Image"));
setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
}
static QPair<double, double> getNewSize(QWidget * parent = 0, double imageWidth = 100.0, double imageHight = 100.0)
{
ResizeImageDialog dlg(parent, imageWidth, imageHight);
dlg.exec();
QPair<double, double> size;
size.first = dlg.m_widthSpinBox->value();
size.second = dlg.m_hightSpinBox->value();
return size;
}
};
現在你可以這樣做:
QPair<double, double> size = ResizeImageDialog::getNewSize(this, newImageFormat.width(), newImageFormat.height());
你要買修改QInputDialog類本身? – jrharshath 2010-09-16 12:18:42
你能更具體地說明你正在嘗試做什麼嗎?你想輸入兩個你想存儲在QPair中的字符串嗎? – 2010-09-16 12:25:14
是的,我想輸入兩個字符串,我想存儲在QPair中。 – Narek 2010-09-16 12:35:50