wm iconbitmap window ?bitmap? If bitmap is specified, then it names a bitmap in the standard forms accepted by Tk (see the Tk_GetBitmap manual entry for details). This bitmap is passed to the window manager to be displayed in window's icon, and the command returns an empty string. If an empty string is specified for bitmap, then any current icon bitmap is cancelled for window. If bitmap is specified then the command returns an empty string. Otherwise it returns the name of the current icon bitmap associated with window, or an empty string if window has no icon bitmap. On the Windows operating system, an additional flag is supported: wm iconbitmap window ?-default? ?image?. If the -default flag is given, the icon is applied to all toplevel windows (existing and future) to which no other specific icon has yet been applied. In addition to bitmap image types, any '''(name of a)''' file which contains a valid Windows icon is also accepted (usually .ico or .icr files). Tcl will first test if the files contains an icon, and if that fails, test for a bitmap. (Tcl Help, bold addition by [RS]) ---- [Eric Brunel] writes, on news:comp.lang.tcl , Since I just spent half an hour to figure out how this works, I thought someone might be interested. The exact syntax is: wm iconbitmap and not: wm iconbitmap @ (the "regular" bitmap files required the "@" in front of them and the manual is a tad unclear on this point...). ---- [Tk Syntax Help] - [Category Command]