cpp QT 处的访问冲突读取位置
[英]Access violation reading location at cpp QT
问题描述
I have problem with next constructor of QPixmap:
我对 QPixmap 的下一个构造函数有疑问：
QPixmap* map = new QPixmap(100, 100);
There`s exception thrown , shown by visual studio.抛出异常，由 Visual Studio 显示。 Access violation reading location 0x0000000000000000访问冲突读取位置 0x0000000000000000
I want to get empty field for drawing with current width and height, what should I do?我想用当前宽度和高度绘制空白字段，我该怎么办？
1 个解决方案
解决方案1
0 已采纳 2021-03-02 21:34:18
More specifically, you are trying to use QPixmap in a non-gui application.更具体地说，您正在尝试在非 gui 应用程序中使用 QPixmap。
https://bugreports.qt.io/browse/QTBUG-64125 https://bugreports.qt.io/browse/QTBUG-64125
QPixmap is connected to the underlying GUI platform, and hence requires QGuiApplication/QApplication to be initialized.
QImage can be used instead here.
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