久久免费香蕉视频,国产精品亚洲综合专区片高清久久久 ,免费精品久久久久久中文字幕

Qt: 創建List, 添加刪除Item

#ifndef LISTWINDOW_H_

#define LISTWINDOW_H_

#include <QDialog>

class QPushButton;

class QListWidget;

class QWidget;

class ListWindow : public QDialog {

Q_OBJECT

public:

ListWindow(QWidget *parent = 0);

virtual ~ListWindow();

public slots:

void moveLeft();

void moveRight();

private:

QPushButton *moveLeftButton;

QPushButton *moveRightButton;

QListWidget *leftList;

QListWidget *rightList;

};

#endif /*LISTWINDOW_H_*/

#include "ListWindow.h"

#include <QPushButton>

#include <QListWidget>

#include <QWidget>

#include <QHBoxLayout>

#include <QVBoxLayout>

#include <QGridLayout>

#include <QStringList>

#include <QListWidgetItem>

ListWindow::ListWindow(QWidget *parent) :

QDialog(parent) {

QGridLayout *gridLayout = new QGridLayout();

gridLayout->addWidget(leftList = new QListWidget(), 0, 0, 3, 1);

gridLayout->addWidget(moveLeftButton = new QPushButton("<<"), 0, 1, 1, 1);

gridLayout->addWidget(moveRightButton = new QPushButton(">>"), 1, 1, 1, 1);

gridLayout->addWidget(rightList = new QListWidget(), 0, 2, 3, 1);

QObject::connect(moveLeftButton, SIGNAL(clicked()), this, SLOT(moveLeft()));

QObject::connect(moveRightButton, SIGNAL(clicked()), this, SLOT(moveRight()));

QStringList items;

items << "One" << "Two" << "Three" << "Four" << "Five" << "Sechs"

<< "Sieben" << "One" << "Two" << "Three" << "Four" << "Five"

<< "Sechs" << "Sieben";

leftList->addItems(items);

this->setLayout(gridLayout);

}

ListWindow::~ListWindow() {

}

void ListWindow::moveLeft() {

// if (rightList->currentItem() == 0) {

// return;

// }

// QString text = rightList->currentItem()->text();

// delete rightList->currentItem();

// leftList->addItem(text);

// The takeItem() method is used to remove an Item form one list without

// having to delete it. TakeItem() no deleting or no creating, more efficient.

if (rightList->selectedItems().count() != 1) {

return;

}

QListWidgetItem *item = rightList->takeItem(rightList->currentRow());

leftList->addItem(item);

}

void ListWindow::moveRight() {

// if (leftList->currentItem() == 0) {

// return;

// }

// QString text = leftList->currentItem()->text();

// delete leftList->currentItem();

// rightList->addItem(text);

if (leftList->selectedItems().count() != 1) {

return;

}

QListWidgetItem *item = leftList->takeItem(leftList->currentRow());

rightList->addItem(item);

}

posted on 2008-03-22 01:24 逛奔的蝸牛閱讀(4026) 評論(0) 編輯收藏引用所屬分類: Qt

只有注冊用戶登錄后才能發表評論。
【推薦】100%開源！大型工業跨平臺軟件C++源碼提供，建模，組態！

相關文章: Qt：編碼范圍 Qt：Windows Qt 去掉選中的虛線框 Qt：定制qDebug等輸出的格式 Qt：給QWidget添加shadow效果 Qt：Q_DECLARE_METATYPE和qRegisterMetaType Qt：繪制帶高光的按鈕 Qt：FontMetrics Mac：Mac下安裝PHP, MySql開發環境 Qt：無標題欄無邊框程序的拖動和改變大小 Qt：Use Third Party Libraries

網站導航: 博客園 IT新聞 BlogJava 博問 Chat2DB 管理

逛奔的蝸牛

隨筆分類

搜索

最新評論