直接上代码
```
#ifdef Q_OS_WIN32
QSettings reg("HKEY_CURRENT_USER\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run",
QSettings::NativeFormat);
QString strAppPath = QDir::toNativeSeparators(QCoreApplication::applicationFilePath());
QString strAppName = QFileInfo(strAppPath).baseName();
reg.setValue(strAppName, bAutoStart ? strAppPath: "");
#endif
#ifdef Q_OS_LINUX
//写.desktop文件, 到/etc/xdg/autostart目录下
#endif
#ifdef Q_OS_MACOS
if (bAutoStart){
LSSharedFileListRef loginItems = LSSharedFileListCreate(NULL, kLSSharedFileListSessionLoginItems, NULL);
CFURLRef url = (CFURLRef)[NSURL fileURLWithPath:QStringToNSString(appPath)];
LSSharedFileListItemRef item = LSSharedFileListInsertItemURL(loginItems, kLSSharedFileListItemLast, NULL, NULL, url, NULL, NULL);
CFRelease(item);
CFRelease(loginItems);
}else{
UInt32 seedValue;
CFURLRef thePath;
LSSharedFileListRef loginItems = LSSharedFileListCreate(NULL, kLSSharedFileListSessionLoginItems, NULL);
CFArrayRef loginItemsArray = LSSharedFileListCopySnapshot(loginItems, &seedValue);
for (id item in (NSArray *)loginItemsArray) {
LSSharedFileListItemRef itemRef = (LSSharedFileListItemRef)item;
if (LSSharedFileListItemResolve(itemRef, 0, (CFURLRef*) &thePath, NULL) == noErr){
if ([[(NSURL *)thePath path] hasPrefix:QStringToNSString(appPath)]){
LSSharedFileListItemRemove(loginItems, itemRef);
}
CFRelease(thePath);
}
}
CFRelease(loginItemsArray);
CFRelease(loginItems);
}
#endif
```
需要完整代码请访问
QtOtherExamples
