QMessageBox類提供了常用的彈出式對話框：提示、警告、錯誤、詢問、關于對話框

需要添加頭文件?

#include <QMessageBox>

MESSAGE? 是要是顯示的字符串

void Dialog::criticalMessage() { QMessageBox::StandardButton reply; reply = QMessageBox::critical(this, tr("QMessageBox::critical()"), MESSAGE, QMessageBox::Abort | QMessageBox::Retry | QMessageBox::Ignore); if (reply == QMessageBox::Abort) criticalLabel->setText(tr("Abort")); else if (reply == QMessageBox::Retry) criticalLabel->setText(tr("Retry")); else criticalLabel->setText(tr("Ignore")); } void Dialog::informationMessage() { QMessageBox::StandardButton reply; reply = QMessageBox::information(this, tr("QMessageBox::information()"), MESSAGE); if (reply == QMessageBox::Ok) informationLabel->setText(tr("OK")); else informationLabel->setText(tr("Escape")); } void Dialog::questionMessage() { QMessageBox::StandardButton reply; reply = QMessageBox::question(this, tr("QMessageBox::question()"), MESSAGE, QMessageBox::Yes | QMessageBox::No | QMessageBox::Cancel); if (reply == QMessageBox::Yes) questionLabel->setText(tr("Yes")); else if (reply == QMessageBox::No) questionLabel->setText(tr("No")); else questionLabel->setText(tr("Cancel")); } void Dialog::warningMessage() { QMessageBox msgBox(QMessageBox::Warning, tr("QMessageBox::warning()"), MESSAGE, 0, this); msgBox.addButton(tr("Save &Again"), QMessageBox::AcceptRole); msgBox.addButton(tr("&Continue"), QMessageBox::RejectRole); if (msgBox.exec() == QMessageBox::AcceptRole) warningLabel->setText(tr("Save Again")); else warningLabel->setText(tr("Continue")); }

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轉載于:https://www.cnblogs.com/wanghuixi/p/7000764.html

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