Get default app icon on Windows

[Cobra91151]

Hi! I want to get default application icon from QFileIconProvider but there are only:

enum QFileIconProvider::IconType

QFileIconProvider::Computer
QFileIconProvider::Desktop	
QFileIconProvider::Trashcan	
QFileIconProvider::Network	
QFileIconProvider::Drive	
QFileIconProvider::Folder	
QFileIconProvider::File

Screenshot:

I can navigate to some system executable file without icon to get this default icon using QFileIconProvider, but I think there should be another approach.
How to get this icon? Thanks.

Update:
I have found the identifier of default app icon - IDI_APPLICATION. The problem now is how to convert it to QIcon or QString? I have tried QString::fromWCharArray(IDI_APPLICATION) and QString::fromStdWString(IDI_APPLICATION) but it doesn't work, the app crashes. How to convert it? Thanks.

[koahnig]

@Cobra91151

Did you see this section already?

The detailed description of QFileIconProvider says:
The QFileIconProvider class provides file icons for the QDirModel and the QFileSystemModel classes.

Does not seem to be what you require, if I understand you correctly.

[Cobra91151]

@koahnig

This is not what I'm looking for. I need to apply this default icon for another apps (or for example set this default icon on QPushButton) using setIcon function. I need a handle to Windows default app icon.

[Cobra91151]

I have found the identifier of default app icon - IDI_APPLICATION. The problem now is how to convert it to QIcon or QString? I have tried QString::fromWCharArray(IDI_APPLICATION) and QString::fromStdWString(IDI_APPLICATION) but it doesn't work, the app crashes. How to convert it? Thanks.

[hskoglund]

Hi, try (assuming you want to show the icon in a QLabel):

ui->label->setPixmap(QtWin::fromHICON(LoadIcon(NULL,IDI_APPLICATION)));

Note: you need to add LIBS += -luser32 to your .pro file and #include "QtWinExtras"

[Cobra91151]

@hskoglund

It works. Thanks.