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电脑问题 #电脑问题

Windows去掉图标快捷方式小箭头

新建txt文件保存以下内容： Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Icons] "29"="%systemr

三味线 Published on 2018-04-19
Qt #Qt#C++

Qt中线程间使用信号槽，槽函数不响应的问题

class myThread:public QThread { signals: void updateSig(MyData); } void myThread::run() { emit updateSig(MyData); } class MainWid:public Mai

三味线 Published on 2018-04-18
Qt #Qt#C++

QComboBox样式表：字体、图标、项高

QComboBox *cmBox = new QComboBox(); cmBox->setStyleSheet("QComboBox{font-family:'微软雅黑';font-size:9; border:1px solid lightgray;}" "QComboBox QAbst

三味线 Published on 2018-04-18
Qt #Qt#C++

Qt读取Excel之QXlsx

void FlightPlanWid::readExcel(QString path) { QXlsx::Document xlsx(path); QXlsx::Workbook *workBook = xlsx.workbook(); QXlsx::Worksheet *w

三味线 Published on 2018-04-18
Qt #Qt#C++

Qt读取Excel之QAxObject

QAxObject * excel = NULL; QAxObject * workbooks = NULL; QAxObject * workbook = NULL; excel = new QAxObject(this); excel -> setControl("Excel.Applicati

三味线 Published on 2018-04-18
Qt #Qt#C++

Qt获取某目录下所有某类型的文件

void ScriptConfig::updateComboBox() { QDir fromDir = "./Data"; QStringList filters; filters.append("*.xls"); filters.append("*.xlsx");

三味线 Published on 2018-04-18
Qt #Qt#C++

Qt中求两线段交点

QPointF MapEditor::getIntersectPos(QPointF posA, QPointF posB, QPointF posC, QPointF posD)//返回AB与CD交点，无交点返回（0,0） { QLineF line1(posA, posB); Q

三味线 Published on 2018-04-18
Qt #Qt#C++

QLineEdit自定义

1.QAction void addAction(QAction * action, ActionPosition position) QLineEdit::LeadingPosition//前面 QLineEdit::TrailingPosition//后面 2.自定义 QMargins mar

三味线 Published on 2018-04-18
Qt #Qt#C++

使用QMediaPlayer没声音

使用QMediaPlayer的程序在别的电脑运行没声音，解决： exe目录添加：mediaservice/dsengine.dll

三味线 Published on 2018-04-18
C++ #C++

函数末尾加const的作用

#include <iostream> using namespace std; class Test { int num; public: Test() { num=10; } void print1() { cout

三味线 Published on 2018-04-18
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