摘要：首先准备个ICO图标。例如：myappico.ico用记事本新建个文件里面就写一行：IDI_ICON1 ICON DISCARDABLE "myappico.ico"保存改名为 myapp.rc并把它和你的图标myappico.ico一起复制到你的QT工程项目的目录。用记事本打开你的QT工程文件（如 "myapp.pro" ），在里面最后新添一行RC_FILE = myapp.rc保存，编译你的工程，嘿嘿。。成功了吧。。。 阅读全文

摘要：首先在头文件中包含#include <QDebug>在需要使用的地方插入：qDebug("intensity:%d",intensity[0][2]); （%d表示整数）输出结果：intensity:195注：%a,%A 读入一个浮点值(仅C99有效) %c 读入一个字符 %d 读入十进制整数 %i 读入十进制，八进制，十六进制整数 %o 读入八进制整数 %x,%X 读入十六进制整数 %s 读入一个字符串，遇空格、制表符或换行符结束。 %f,%F,%e,%E,%g,%G 用来输入实数，可以用小数形式或指数形式输入。 %p 读入一个指针 %u 读入一个无符号十.. 阅读全文

摘要：Sometimes it is miserable to find that the release version of your software has Garbage Characters and Errors in Images.Here is a good solution which has been tested to be ok.1. In the main() function of your program, add this at the very beginning: QApplication::addLibraryPath("./plugins" 阅读全文

摘要：We can show a image with automatic scroll bars with the use of QScrollArea.This is a simple application with QScrollArea.#include <QtGui/QApplication>#include <QLabel>#include <QScrollArea>#include "qmlapplicationviewer.h"Q_DECL_EXPORT int main(int argc, char *argv[]){ QA 阅读全文

摘要：To paint on a device, usually a widget, we need to overload the function void QWidget::paintEvent(QPainteEvent *event){}We also need to construct the object of QPainter in the function of paintEvent like this: QPainter painter(this);Then we will be able to use QPainter whataver we like. 阅读全文

摘要：QWidget::width();QWidget::height(); 阅读全文

摘要：头文件包含：#include <QTextCodec>在QApplication app(argc,argv);之后加：QTextCodec::setCodecForTr(QTextCodec::codecForName("GBK"));显示中文时调用：QObject::tr("中文")例如：QLabel hello(QObject::tr("你好世界")); 阅读全文

摘要：There are two main factors to start a Qt program:1. In the 'Project' menu, select 'Release';2. Copy the files in 'bin' to the folder of the program. 阅读全文