Qt gets Windows memory information

By calling the Windows API to get Windows memory information and displaying it on the interface, you can see that the result is correct by comparing it with the Windows Memory Manager.

The interface effect of the implemented gadget is compared with the memory manager as follows:

Complete code for the implementation:

 #pragma Execution_character_set ("Utf-8") #ifndef qmemoryinfo_h#define qmemoryinfo_h#include <qtwidgets/qwidget># Include <QLabel> #include <QLineEdit> #include <qtimer>class qmemoryinfo:public qwidget{q_ Objectpublic:qmemoryinfo (Qwidget *parent = 0); ~qmemoryinfo ();p rivate:void updateInfo (); Qtimer *m_timer; Qlabel *m_memoryusedlabel; Qlabel *m_totalphyslabel; Qlabel *m_availphyslabel; Qlabel *m_totalpagefilelabel; Qlabel *m_availpagefilelabel; Qlabel *m_totalvirtuallabel; Qlabel *m_availvirtuallabel; Qlabel *m_availexvirtuallabel; Qlineedit *m_memoryusededit; Qlineedit *m_totalphysedit; Qlineedit *m_availphysedit; Qlineedit *m_totalpagefileedit; Qlineedit *m_availpagefileedit; Qlineedit *m_totalvirtualedit; Qlineedit *m_availvirtualedit; Qlineedit *m_availexvirtualedit;}; #endif//Qmemoryinfo_h 

#include "qmemoryinfo.h" #include <QGridLayout> #include <windows.h> #include <sysinfoapi.h> Qmemoryinfo::qmemoryinfo (Qwidget *parent): Qwidget (parent) {M_memoryusedlabel = new Qlabel (this); M_totalphyslabel = New Qlabel (this), M_availphyslabel = new Qlabel (this), M_totalpagefilelabel = new Qlabel (this); M_availpagefilelabel = new Qlabel (this), M_totalvirtuallabel = new Qlabel (this), M_availvirtuallabel = new Qlabel (this); M_availexvirtuallabel = new Qlabel (this), M_memoryusededit = new Qlineedit (this), M_totalphysedit = new Qlineedit (this); m_availphysedit = new Qlineedit (this), M_totalpagefileedit = new Qlineedit (this), M_availpagefileedit = new Qlineedit (this); m_ Totalvirtualedit = new Qlineedit (this), M_availvirtualedit = new Qlineedit (this); m_availexvirtualedit = new Qlineedit ( this); M_memoryusedlabel->settext (QOBJECT::TR ("Memory Utilization:")); M_totalphyslabel->settext ("Total Physical Memory:") m_ Availphyslabel->settext ("Available Physical Memory:"); M_totalpagefilelabel->settext ("Total system submissions:"); m_availpagefilelabel->sEttext ("System commits:"), M_totalvirtuallabel->settext ("Total virtual Memory:"), M_availvirtuallabel->settext ("Available virtual Memory:") m_ Availexvirtuallabel->settext ("Available extended virtual:"); M_memoryusededit->setreadonly (True);m_totalphysedit-> Setreadonly (True); M_availphysedit->setreadonly (true); M_totalpagefileedit->setreadonly (true); m_ Availpagefileedit->setreadonly (True); M_totalvirtualedit->setreadonly (True);m_availvirtualedit-> Setreadonly (True); M_availexvirtualedit->setreadonly (true); Qgridlayout *play = new Qgridlayout (this); int iLine = 0;play->addwidget (M_memoryusedlabel, ILine, 0, 1, 1);p Lay->ad Dwidget (M_memoryusededit, ILine, 1, 1, 3); iline++;p lay->addwidget (M_totalphyslabel, ILine, 0, 1, 1);p lay-> AddWidget (M_totalphysedit, ILine, 1, 1, 3); iline++;p lay->addwidget (M_availphyslabel, ILine, 0, 1, 1);p lay-> AddWidget (M_availphysedit, ILine, 1, 1, 3); iline++;p lay->addwidget (M_totalpagefilelabel, ILine, 0, 1, 1);p lay-> AddWidget (M_totalpagefileedit, ILine, 1, 1, 3); iline++;p Lay->adDwidget (M_availpagefilelabel, ILine, 0, 1, 1);p lay->addwidget (M_availpagefileedit, ILine, 1, 1, 3); iline++;p lay- >addwidget (M_totalvirtuallabel, ILine, 0, 1, 1);p lay->addwidget (M_totalvirtualedit, ILine, 1, 1, 3); iline++; Play->addwidget (M_availvirtuallabel, ILine, 0, 1, 1);p lay->addwidget (M_availvirtualedit, ILine, 1, 1, 3); iline++ ;p Lay->addwidget (M_availexvirtuallabel, ILine, 0, 1, 1);p lay->addwidget (M_availexvirtualedit, ILine, 1, 1, 3); m_ Timer = new Qtimer (this); Connect (M_timer, &qtimer::timeout, this, &qmemoryinfo::updateinfo);m_timer-> Start (100);} Qmemoryinfo::~qmemoryinfo () {}void qmemoryinfo::updateinfo () {Memorystatusex memoryinfo;memoryinfo.dwlength = sizeof (Memoryinfo); GlobalMemoryStatusEx (&memoryinfo); UINT MB = 1024x768 * 1024;m_memoryusededit->settext (Qstring::number (memoryinfo.dwmemoryload). Append ("%")); m_ Totalphysedit->settext (Qstring::number (MEMORYINFO.ULLTOTALPHYS/MB)); M_availphysedit->settext (QString:: Number (memoryinfo.ullavailphyS/MB)); M_totalpagefileedit->settext (Qstring::number (MEMORYINFO.ULLTOTALPAGEFILE/MB)); m_availPageFileEdit- >settext (Qstring::number (MEMORYINFO.ULLTOTALPAGEFILE/MB-MEMORYINFO.ULLAVAILPAGEFILE/MB)); m_ Totalvirtualedit->settext (Qstring::number (MEMORYINFO.ULLTOTALVIRTUAL/MB)); M_availvirtualedit->settext ( Qstring::number (MEMORYINFO.ULLAVAILVIRTUAL/MB)); M_availexvirtualedit->settext (QString::number ( MEMORYINFO.ULLAVAILEXTENDEDVIRTUAL/MB)); Update ();}

AC qq:1245178753

This address: http://blog.csdn.net/u011417605/article/details/51564802

SOURCE Download: http://download.csdn.net/detail/u011417605/9538726

Qt gets Windows memory information