std::shared_ptr<PackageManager::IPkgmgrSignal> pkgmgrInterface;
// It must be empty-constructible as a parameter of generic event
std::shared_ptr<PackageManager::IPkgmgrSignal> pkgmgrInterface;
// It must be empty-constructible as a parameter of generic event
WidgetInstallationStruct(
InstallerFinishedCallback finished,
InstallerProgressCallback progress,
void *param,
WidgetInstallationStruct(
InstallerFinishedCallback finished,
InstallerProgressCallback progress,
void *param,