.png files in .rc (resource file)

I use .png files inside my Qt application, but to make ico for .exe file, i need use .ico,

IDI_ICON1               开发者_开发百科ICON    DISCARDABLE     "app.ico"

can I put app.png instead of app.ico?

---

I think that you can't. I took a quick glance over the Qt documentation regarding application icon's and it seems that for Windows you must use .ico filetype.