Advertisements Qt 5.15.5 msvc2019 compiler clang version 12.0.0 Target: x86_64-pc-windows-msvc struct FrameStyle { QColor color; // has both == and != operators Qt::PenStyle penStyle; // enum Distance padding; // has == operator bool operator==(const FrameStyle& other) { return other.color == color && other.penStyle == penStyle && other.padding == padding; } }; FrameStyle style; FrameStyle m_prevStyle;… Read More C++ structs equal operator: invalid operands to binary expression

Advertisements im trying to make a Button which switches between light and darkmode. Switching to darkmode is pretty easy, but switching to lightmode again is a bit complicated I try to switch to the default Palette but idk how it really works.. This is the function: def modeSwitch(self): if self.dark_mode: self.dark_mode = False QApplication.setPalette("") else:… Read More Trying to make a dark- lightmode switcher

Advertisements I’m trying to connect a QSlider object to a QLineEdit such to enable a user to either specify a value using the slider or direct input into a form. The goal here is when the slider position changes, we update the text in the QLineEdit box and vice versa. However, when I try to… Read More QSlider reporting incorrect value for valueChanged()

Advertisements In the following code, I think p2 should print 10. But in fact it prints random value. The I starts to understand why it is not 10, with the following (1)-(3) thougths. { int m = 10; // local var m qDebug() << "m0: " << &m; connect(btn2, &QPushButton::clicked, this, [&]() { qDebug() <<… Read More Qt5 slot lambda why captured local variable is random for the first time lambda is called

Advertisements I want to read a text file that contains 0 and 1 as binary, consider this example: textfile.txt: 001001100101 010100011100 100000110001 001111110101 100010110101 111010100100 011011000110 i want to read this stream of 0 and 1 as binary or read then convert it. If we consider first line "001001100101", i want to it convert to… Read More Read 0 and 1 text file as binary in Qt