Qt 获取系统默认图标

#include "DlgIcon.h" #include <QFileIconProvider> #include <QToolButton> #include <QFileInfo> #include <Windows.h> #include <ObjBase.h> #include <ShellAPI.h> #include <QDir> #include <QDesktopServices> #include <QUrl> #include <QProcess> CDlgIcon::CDlgIcon( QWidget* pParent /* = NULL */ ):QDialog(pParent) { m_ui.setupUi( this ); pProcess = new QProcess; } CDlgIcon::~CDlgIcon( ) { pProcess->deleteLater(); pProcess = NULL; } void CDlgIcon::on_pshBtnIcon_clicked( ) { QString strText = m_ui.lineEdit->text(); QString tmpQStr = QString("/select," ) + QDir::toNativeSeparators( strText ); pProcess->start("explorer.exe",QStringList()<<tmpQStr); // pProcess->deleteLater(); // QString strTest = QString::fromLocal8Bit("<a href = \"%1\">%1</a>").arg( strText ); // QDesktopServices::openUrl( QUrl::fromLocalFile(strText) ); // m_ui.label_2->setText( strTest ); // QString strLink = "D:\\work\\libjinggle\\talk\\build\\win32\\QTT_Enterprise\\Bin\10351\\receiveFile\\322342(4).mp4"; // QString tmpStr = QString("/select," ) + QDir::toNativeSeparators( strLink ); // LPCSTR fileTmpPath = "/select,D:\\work\\libjinggle\\talk\\build\\win32\\QTT_Enterprise\\Bin\\10351\\receiveFile\\322342(4).mp4"; // LPCSTR fileTmpPath2 = strLink.toStdString().c_str(); // std::string str = strLink.toStdString(); // LPCSTR fileTmpPath1 = str.c_str(); // ShellExecuteA(0,"open","explorer.exe",fileTmpPath,NULL,true); // LPCSTR filePath = tmpStr.toStdString().data() /*"/select,C:/Users/xl.xu/Desktop/322342.mp4"*/; // ShellExecuteA(0,"open","explorer.exe",filePath,NULL,true); // static HRESULT comInit = CoInitializeEx(NULL, COINIT_MULTITHREADED); // Q_UNUSED(comInit); // // SHFILEINFO tmpInfo; // unsigned long val = 0; // // QString strDir = m_ui.lineEdit->text(); // QFileIconProvider provider; // QFileInfo fileInfo( strDir ); // m_ui.pshBtnIcon->setIcon( provider.icon( fileInfo ) ); // val = SHGetFileInfo( (const wchar_t *)QDir::toNativeSeparators(strDir).utf16(), // FILE_ATTRIBUTE_NORMAL, // &tmpInfo, // sizeof(SHFILEINFO),SHGFI_USEFILEATTRIBUTES |SHGFI_DISPLAYNAME |SHGFI_TYPENAME |SHGFI_ICON| SHGFI_LARGEICON); // // QPixmap pixmap = QPixmap::fromWinHICON( tmpInfo.hIcon ); // m_ui.pshBtnIcon->setIcon( QIcon( pixmap ) ); }