qt4

问题 I want to copy the contents in directory "temp" to "dd" BINARY_DESTINATION_PATH = $$PWD$$SEPARATOR/dd/ RESOURCE_SOURCE_PATH = $$PWD$$SEPARATOR/temp EXPORTED_DESTINATION_PATH = $${BINARY_DESTINATION_PATH} EXPORTED_DESTINATION_PATH ~= s,/,\\,g EXPORTED_SOURCE_PATH = $${RESOURCE_SOURCE_PATH} EXPORTED_SOURCE_PATH ~= s,/,\\,g QT += core QT -= gui CONFIG += c++11 TARGET = sample CONFIG += console CONFIG -= app_bundle TEMPLATE = app SOURCES += main.cpp win32 { QMAKE_POST_LINK += $$quote(cmd /c xcopy

问题 I have some part of code with which the debugger , when entering , starts stopping in lines with { braces.. suddenly jumps back to a blank line, and apparently is doing something (variables change), but the positions are different (there is some kind of weird offset back, skipping blank lines) and obviously i cannot see the contents of any variable. Some facts: I'm compiling on DEBUG The code that fails falls inside more code which executes perfectly before. The code does not work properly ,

问题 I want to create a resizeable selection tool to select a part of an image with the mouse. I want to accomplish this with QT, i have a working QRubberBand to create a basic selection. Next step is to make that selection resizeable with the mouse. So if you click&drag a corner the size changes accordingly and if you click&drag inside the selection it should move the selection. now my idea is subclassing QRubberBand and overriding the paintEvent method to paint a big dot on every corner and

问题 I'm working on a source code editor that should have smart indent/dedent behaviour. However, my dedenting method seems to be causing a segmentation fault. I'd be very pleased if someone could work out why. Here's a minimal example: #!/usr/bin/env python import sip sip.setapi('QString', 2) sip.setapi('QVariant', 2) from PyQt4 import QtGui from PyQt4.QtCore import Qt class Editor(QtGui.QPlainTextEdit): def keyPressEvent(self, event): key = event.key() if key == Qt.Key_Backtab: cursor = self

问题 I'm currently developing a game in the LeadWerks 2 engine and I've decided to use Qt4 as the GUI and window manager. What I want to do is create a Qt QGLWidget window and have the LeadWerks engine run inside of that. There is some information of building a basic QGLWidget application here. I'm really struggling to understand how to do this exactly. I can create a custom GL buffer within the LeadWerks engine and I believe what I need to do is give that buffer the GL context Qt created. As for

问题 I need to create XML file in QT, but i dont use QT XML classes to create the XML data, but i create strings manually (which contains XML) and write it into the file, the reason for not using QT XML classes is, i need to preserve the order of attribute but if i use QT XMl classes it writes attribute in random order. Everything was fine up to now, until i get the html text to be written as tag value in XML. i need to write HTML data as the QT XMl classes writes for e.g "This is <Test data>"

问题 I'm trying to figure out how to feed the PyQt tr() or trUtf8() functions UTF-8 text. Here are examples strings: self.tr('λληνικά') self.tr(u'εληνικά') self.tr('ελνικά'.encode('utf-8')) self.tr(u'ελληικά'.encode('utf-8')) self.trUtf8('λληνικ') self.trUtf8(u'εληνιά') self.trUtf8('ελνι'.encode('utf-8')) self.trUtf8(u'ελλκά'.encode('utf-8')) The ones with self.tr display as gibberish in Qt Linguist. The ones with self.trUtf8 display fine, but they trigger a warning when applying pylupdate4 : Non

问题 I'm having difficulty creating an OpenGL context newer than 2.1 (Mac OS 10.9.1, Qt 4.8.5, PySide 1.2.1). Minimal example code is given below; it produces a 2.1 context rather than 3.2 or higher. The code is based on this tutorial; the tutorial's sample C++ code also fails when run on my machine. This issue might be related to this bug: QGLFormat.openGLVersionFlags() returns 0x7f (indicating compatability up to OpenGL 2.1 but no later). Is there something that I'm missing, or is it hopeless

问题 Elongated question: When having more blocking threads then CPU cores, where's the balance between thread amount and thread block times to maximize CPU efficiency by reducing context switch overhead? I have a wide variety of IO devices that I need to control on Windows 7, with a x64 multi-core processor: PCI devices, network devices, stuff being saved to hard drives, big chunks of data being copied,... The most common policy is: "Put a thread on it!". Several dozen threads later, this is

问题 Is it possible to set only one file format visible to the user? I'm searching it in documentation, but I can't find it... If not, which other widget you are suggesting to use? 回答1: I assume you're using a QTreeView with a QFileSystemModel. If not, I'd suggest doing so. QTreeWidget is not as flexible. QFileSystemModel has a method called setNameFilters that should do what you want. To use it, do something like this: QStringList filters; filters.append("*.cc"); // whatever filters you want