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Fix app crash. 

Use pointers.

Signed-off-by: Yuhang Zhao <2546789017@qq.com>
This commit is contained in:
Yuhang Zhao 2020-05-08 18:13:43 +08:00
parent 43d83bf156
commit 53700554d2
1 changed files with 31 additions and 31 deletions
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62
main.cpp
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@ -93,48 +93,48 @@ int main(int argc, char *argv[]) {
// Qt Widgets example:
QWidget widget;
widget.setContentsMargins(0, 0, 0, 0);
QLabel label;
label.setText(QObject::tr("Hello, World!"));
QObject::connect(&widget, &QWidget::windowTitleChanged, &label,
QLabel *label = new QLabel;
label->setText(QObject::tr("Hello, World!"));
QObject::connect(&widget, &QWidget::windowTitleChanged, label,
&QLabel::setText);
QPushButton minimizeButton;
minimizeButton.setText(QObject::tr("Minimize"));
QObject::connect(&minimizeButton, &QPushButton::clicked, &widget,
QPushButton *minimizeButton = new QPushButton;
minimizeButton->setText(QObject::tr("Minimize"));
QObject::connect(minimizeButton, &QPushButton::clicked, &widget,
&QWidget::showMinimized);
QPushButton maximizeButton;
maximizeButton.setText(QObject::tr("Maximize"));
QObject::connect(&maximizeButton, &QPushButton::clicked,
QPushButton *maximizeButton = new QPushButton;
maximizeButton->setText(QObject::tr("Maximize"));
QObject::connect(maximizeButton, &QPushButton::clicked,
[&widget, &maximizeButton]() {
if (widget.isMaximized()) {
widget.showNormal();
maximizeButton.setText(QObject::tr("Maximize"));
maximizeButton->setText(QObject::tr("Maximize"));
} else {
widget.showMaximized();
maximizeButton.setText(QObject::tr("Restore"));
maximizeButton->setText(QObject::tr("Restore"));
}
});
QPushButton closeButton;
closeButton.setText(QObject::tr("Close"));
QObject::connect(&closeButton, &QPushButton::clicked, &widget,
QPushButton *closeButton = new QPushButton;
closeButton->setText(QObject::tr("Close"));
QObject::connect(closeButton, &QPushButton::clicked, &widget,
&QWidget::close);
QHBoxLayout tbLayout;
tbLayout.setContentsMargins(0, 0, 0, 0);
tbLayout.setSpacing(0);
tbLayout.addSpacing(15);
tbLayout.addWidget(&label);
tbLayout.addStretch();
tbLayout.addWidget(&minimizeButton);
tbLayout.addWidget(&maximizeButton);
tbLayout.addWidget(&closeButton);
QVBoxLayout mainLayout;
mainLayout.setContentsMargins(0, 0, 0, 0);
mainLayout.setSpacing(0);
mainLayout.addLayout(&tbLayout);
mainLayout.addStretch();
widget.setLayout(&mainLayout);
QHBoxLayout *tbLayout = new QHBoxLayout;
tbLayout->setContentsMargins(0, 0, 0, 0);
tbLayout->setSpacing(0);
tbLayout->addSpacing(15);
tbLayout->addWidget(label);
tbLayout->addStretch();
tbLayout->addWidget(minimizeButton);
tbLayout->addWidget(maximizeButton);
tbLayout->addWidget(closeButton);
QVBoxLayout *mainLayout = new QVBoxLayout;
mainLayout->setContentsMargins(0, 0, 0, 0);
mainLayout->setSpacing(0);
mainLayout->addLayout(tbLayout);
mainLayout->addStretch();
widget.setLayout(mainLayout);
WinNativeEventFilter::WINDOWDATA data_widget;
data_widget.ignoreObjects << &minimizeButton << &maximizeButton
<< &closeButton;
data_widget.ignoreObjects << minimizeButton << maximizeButton
<< closeButton;
const auto hWnd_widget = reinterpret_cast<HWND>(widget.winId());
const int tbh_widget = WinNativeEventFilter::getSystemMetric(
hWnd_widget, WinNativeEventFilter::SystemMetric::TitleBarHeight, false);