qt

问题 I have a form where i've done a custom field that only accepts the top, right and bottom arrows. But to accept the tab navigation i'm using the following chain of functions: nextItemInFocusChain().forceActiveFocus() The problem is that this is working on windows but not on mac ... I've a formulary to illustrate the problem where next to that "code text field" i have a comboBox where i want, that when the user clicks on tab in the "code text field" to navigate to. It seems that it only

问题 I have a form where i've done a custom field that only accepts the top, right and bottom arrows. But to accept the tab navigation i'm using the following chain of functions: nextItemInFocusChain().forceActiveFocus() The problem is that this is working on windows but not on mac ... I've a formulary to illustrate the problem where next to that "code text field" i have a comboBox where i want, that when the user clicks on tab in the "code text field" to navigate to. It seems that it only

问题 I want to create two subplots (like 2 rows), the first plot will show the line series graph based on Analog to Digital Converter counts stored in a text file and the second plot will show the line series graph based on Temperature values stored in a text file. I am able to plot the line series in the same plot, but I want to plot it in two separate subplots. #include <QApplication> #include <QMainWindow> #include <QFile> #include <QTextStream> #include <QDateTime> #include <QTime> #include

问题 I want to make a .dll in Qt, and to use generated .dll in a Java project in Eclipse. I've followed this tutorial to create a working dll. The full code that works is given below: jniProjectExample_JniExample.h /* DO NOT EDIT THIS FILE - it is machine generated */ #include <jni.h> /* Header for class jniProjectExample_JniExample */ #ifndef _Included_jniProjectExample_JniExample #define _Included_jniProjectExample_JniExample #ifdef __cplusplus extern "C" { #endif /* * Class: jniProjectExample

问题 I want to make a .dll in Qt, and to use generated .dll in a Java project in Eclipse. I've followed this tutorial to create a working dll. The full code that works is given below: jniProjectExample_JniExample.h /* DO NOT EDIT THIS FILE - it is machine generated */ #include <jni.h> /* Header for class jniProjectExample_JniExample */ #ifndef _Included_jniProjectExample_JniExample #define _Included_jniProjectExample_JniExample #ifdef __cplusplus extern "C" { #endif /* * Class: jniProjectExample

问题 This is my Logging class: #include "log.h" #include "ui_log.h" #include <QDebug> #include <QMutex> bool Log::logOpen = false; Log::Log(QWidget *parent) : QDialog(parent), ui(new Ui::Log) { ui->setupUi(this); text = new QString; this->bar = this->ui->logText->verticalScrollBar(); connect(this, SIGNAL(call_write(char*)), this, SLOT(write(char*))); } Log::~Log() { delete ui; } void Log::on_buttonClose_clicked() { Log::logOpen = false; close(); } void Log::on_buttonClear_clicked() { this->text-

问题 This is my Logging class: #include "log.h" #include "ui_log.h" #include <QDebug> #include <QMutex> bool Log::logOpen = false; Log::Log(QWidget *parent) : QDialog(parent), ui(new Ui::Log) { ui->setupUi(this); text = new QString; this->bar = this->ui->logText->verticalScrollBar(); connect(this, SIGNAL(call_write(char*)), this, SLOT(write(char*))); } Log::~Log() { delete ui; } void Log::on_buttonClose_clicked() { Log::logOpen = false; close(); } void Log::on_buttonClear_clicked() { this->text-

问题 I have a QTreeWidget that I am using to represent a breakdown structure of data. Basically I plan on using my QTreeWidget in a way to track the population of certain demographics in cities. For example: Males 9,000 - New York 5,000 - D.C. 4,000 Females 10,000 - Nashville 3,000 - San Diego 7,000 Obviously this data is just for example. A few problems I am having with implementing this. I can't figure out how to iterate over the tree. So that every so often I can check if the data has changed.

问题 I have a QTreeWidget that I am using to represent a breakdown structure of data. Basically I plan on using my QTreeWidget in a way to track the population of certain demographics in cities. For example: Males 9,000 - New York 5,000 - D.C. 4,000 Females 10,000 - Nashville 3,000 - San Diego 7,000 Obviously this data is just for example. A few problems I am having with implementing this. I can't figure out how to iterate over the tree. So that every so often I can check if the data has changed.

问题 This may be a noob question, but I have been stuck trying to work out how to statically build my qt project on linux. I tried doing what it said on http://doc.qt.io/qt-5/linux-deployment.html , but I do not understand the 1st step. When I cd to the location of my qt project and run cd /path/to/Qt ./configure -static -prefix /path/to/Qt < otherparameters > make it says no such file or directory. Am I misunderstanding what paths I need to use? I want to make my qt project a stand alone