qtgui

问题 I am working on a test case editor. This editor contains USART a transmit and receive packet format. The editor is a table view. The transmit and receive packet is eight bytes long, for example: 0x01 0x02 0x03 ... 0x08 It is in my fifth and sixth column. Now, I want the cells in this column to be read only, but when I double-click on any cell in these columns a pop-up widget is displayed. This widget will contain eight boxes in the text edit, where the user can enter the packet format (i.e.

问题 A QtGui.QLineEdit line_edit widget is placed inside of QtGui.QFormLayout Form layout using .addRow() method. my_formLayout.addRow(my_label, my_lineEdit) To make a line_edit widget to stick to a dialog window's edges (so it re-sizes with the dialog) tried using sizePolicy: sizePolicy = my_lineEdit.sizePolicy() sizePolicy.setHorizontalStretch(1) my_lineEdit.setSizePolicy( sizePolicy ) There are no errors. But the line_edit widget still doesn't stick to the edges of the dialog... What could be

问题 I want to make a QLabel clickable and followed this "how-to". I was not sure how to get this piece of code into my GUI (I am quite newbie to qt). What I did was: I created a new class (just copy/paste of ClickableLabel from the link, but I changed the signal to clicked(QMouseEvent* event) ) I added a QLabel to my GUI and "promoted" it to a ClickableLable I connected the signal to a slot of my main window where I std::cout some stuff: connect(this->ui->label,SIGNAL(clicked(QMouseEvent*)), this

问题 QOpenGLFunctions seems to be missing important functions such as glInvalidateFramebuffer and glMapBuffer. From what I understand QOpenGLFunctions loads the intersection of both desktop OpenGL functions and ES functions. If that's the case, why aren't these two functions present? From what I can tell glMapBuffer is in both. Am I misunderstanding QOpenGLFunctions, or are they actually missing functions(unlikely)? 回答1: There are multiple reasons for those two cases and the one in the comment: 1)

问题 I want a line edit which accepts an ip address. If I give input mask as: ui->lineEdit->setInputMask("000.000.000.000"); It is accepting values greater than 255. If I give a validator then we have to give a dot(.) after every three digits. What would the best way to handle it? 回答1: It is accepting value greater than 255. Absolutely, because '0' means this: ASCII digit permitted but not required. As you can see, this is not your cup of tea. There are at least the following ways to circumvent it

问题 I'm new to Qt and I'm trying to figure out a way to auto-resize in Qt. The goal is for the user to be able to drag the window to make it bigger and everything resizes to the size of the window. Does anyone have any tips? 来源： https://stackoverflow.com/questions/25571298/how-to-enable-resizing-of-a-window-in-qt

问题 I've got a question about signals and slots. In my app, I want to connect a signal from one object to a textEdit in a dialog window. My signal emits a QString ; if I violate encapsulation (by making the UI public instead of private) and connect the signal directly to the textEdit it works. But I feel that it's not the right way. If I make something like the following: connect(m_osgWidget->picker.get(), SIGNAL(setX(QString)), m_addAgentDlg, SLOT(getX(QString))); where: void getX(QString) {

问题 This question already has answers here : Proper way to quit/exit a PyQt program (2 answers) Closed 12 months ago . If the user interacts with the application, for example pressing a button, and the user clicks then on the X button, the application keeps running, but the window closes. How can I fully terminate the application. It’s built using PyQt5. 回答1: Here is a simple "Hello World" example, I copied from the Qt tutorials. It uses sys.exit(...) to exit the application. import sys from

问题 I have a tree of items. It is like this: Categorias (root) - General --- Computadoras --- Tablets - Insumos --- Cartuchos The problem is that the QTreeView is being completed always with the same information. I get a tree view looking like this: Categorias (root) - General --- General --- Insumos - Insumos --- General I have put a "print" in the index() method in order to see if the index was being created, and then, when I enter, for example, the "General" category for the first time,

问题 Having problems with selecting pieces of text using the Qt framework. For example if i have this document : "No time for rest". And i want to select "ime for r" and delete this piece of text from the document, how should i do it using QTextCursor? Here is my code: QTextCursor *cursor = new QTextCursor(ui->plainTextEdit->document()); cursor->setPosition(StartPos,QTextCursor::MoveAnchor); cursor->setPosition(EndPos,QTextCursor::KeepAnchor); cursor->select(QTextCursor::LineUnderCursor); cursor-