• label
• programming:tcl/tk:tk_labelframe - a label plus a frame, or a frame with a label
• programming:tcl/tk:tk_button
• entry - single line of text, allows user to input and edit text.
• frame - used as a spacer or container for complex window layouts.
• programming:tcl/tk:tk_text - multiple lines of text, allows user to input and edit text.
• programming:tcl/tk:tk_scrollbar
• programming:tcl/tk:tk_scale
• radiobutton
• programming:tcl/tk:tk_checkbutton
• programming:tcl/tk:tk_listbox
• menus
• tk_optionMenu
• canvas
• programming:tcl/tk:tk_message - multi-lined version of the label.
• programming:tcl/tk:tk_panedwindow
• programming:tcl/tk:tk_spinbox

Common options:

-width - in characters for text or screen units for bitmaps

-height - in lines of text for text or screen units for bitmaps