Icon on window taskbar

[muby]

With this trueframeless windows i'm not succeed to add icon for the taskbar.

I tried :

RC_ICONS = icon.ico in the .pro

I tried :

HICON hWindowIcon = LoadIcon(GetModuleHandle(NULL), strVariable2);
	SendMessage(hWnd, WM_SETICON, ICON_SMALL, (LPARAM)hWindowIcon);
	SendMessage(hWnd, WM_SETICON, ICON_BIG, (LPARAM)hWindowIcon);

no one succeed,

Does some one try ?