Qt:C ++:恢复弹出对话框的几何 [英] Qt: C++: Restoring geometry of a pop-up dialog-box

问题描述

我试图保存弹出对话框的几何图形，然后在每次调用弹出对话框时(应用程序仍在运行时)将其还原.

I am trying to save the geometry of a pop-up dialog-box and then restore it back whenever I call the pop-up dialog box (while the application is still running).

但是我无法弄清楚.

代码运行无错误.但是，每次打开时，弹出窗口的位置都会保持垂直变化.除非我关闭整个应用程序，然后再次将其重新打开，否则弹出窗口将永远不会回到其在屏幕中央的原始位置.

The code runs without error. But the window of the pop-up keeps changing it position vertically everytime it is open. Unless I close the whole application and then re-opened it again, the pop-up never goes to its original position in the center of the screen.

我正在尝试使用QcloseEvent，QSettings和restoreGeometry.但是有什么不对的，请帮忙.

I am trying to use QcloseEvent, QSettings and restoreGeometry. But something is not right, please help.

这里是 MainWindow.cpp :

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "ui_addmembersdialog.h"
#include "addmembersdialog.h"

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    mpAddMembersDialog = new AddMembersDialog;
    connect(ui->testBtn,SIGNAL(clicked()),this,SLOT(openPopUpForm()));
}

void MainWindow::openPopUpForm(){
    mpAddMembersDialog->readSettings();
    mpAddMembersDialog->exec();
}

这里是 AddMembersDialog.cpp :

#include "addmembersdialog.h"
#include "ui_addmembersdialog.h"
#include <QMessageBox>

AddMembersDialog::AddMembersDialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::AddMembersDialog)
{
    ui->setupUi(this);
    connect(ui->closeFormBtn,SIGNAL(clicked()),this,SLOT(Exit()));
}
void AddMembersDialog::Exit()
{
    close();
}

void AddMembersDialog::closeEvent(QCloseEvent *event){
    QSettings settings("DevSuda", "Muwassa");
    settings.setValue("geometery", saveGeometry());
    QDialog::closeEvent(event);
}

void AddMembersDialog::readSettings(){
    QSettings settings("DevSuda", "Muwassa");
    restoreGeometry(settings.value("QDialog/geometry").toByteArray());
}

推荐答案

请比较以下两行使用的密钥:

Please compare the key used for the following two lines:

settings.setValue("geometery", saveGeometry());

和

restoreGeometry(settings.value("QDialog/geometry").toByteArray());

"geometry"与"QDialog/geometry".应该一样！

我还要在cpp文件中预定义您的密钥/组织/应用程序名称，例如:

also I would predefine your keys/organization/application name in the cpp file such as:

...
static const char * ksOrganization{"DevSuda"};
static const char * ksApp         {"Muwassa"};
static const char * ksKey         {"geometery"};
...
QSettings settings(ksOrganization, ksApp);
settings.setValue(ksKey, saveGeometry());

这将防止您在一个地方键入错误的密码...

This would prevent you from typing the key wrong in one place...

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