MyXmlReader::MyXmlReader(QWidget *parent) : QDialog(parent) { ui.setupUi(this); connect(ui.openBtn, SIGNAL(clicked()), this, SLOT(openFile
WIN+R输入regedit,打开注册表 在以下目录中删除 HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\MyComputer\NameSpace
int num; CString str; //int转CString num=10; str.Format(_T("%d"),num); //CString转int str=L"10"; num=_ttoi(str);
已知两圆圆心坐标和半径,求相交部分面积: #include <iostream> using namespace std; #include<cmath> #include<stdio.h> #define PI 3.141593 struct point//点 { double x,y;