Back to Table of Contents

This variable is critical to the operation of both Tcl/Tk and TclBridge.

The directory containing the TclBridge dynamic link library should be in the path if you wish to use any of the functions declared in the "TclBridgeSupport" (TCLBSUPT.BAS) module, as they rely on the "TclBridge.DLL" file being in a "well known" location, such as a directory in the path.

The directory containing the Tcl/Tk binary files, such as the primary Tcl and Tk dynamic link libraries, should be in the path unless you specify the full path and filename in the "Tcl_DLL" and "Tk_DLL" environment variables, respectively.

When running on Windows NT/2000/XP, unlike other environment variables, the value of this environment variable is derived from the union of values from both the "System" and "User" environments. When running on Windows 9x/Me, this variable must be set in the "AUTOEXEC.BAT" file.

This variable is used to specify the Tcl library directory (where the Tcl initialization files reside). Use of this variable is deprecated because the Tcl initialization code has been enhanced to the point where it is largely unnecessary.

This variable is used to specify the Tk library directory (where the Tk initialization files reside). Use of this variable is deprecated because the Tk initialization code has been enhanced to the point where it is largely unnecessary.

This variable is read ONLY during the initialization of the component. If this variable is specified, it must contain either a valid file name or a valid full path and file name for the Tcl dynamic link library to load during initialization. The default value of this variable is "TCL.DLL", if it has not been specified.

This variable is read ONLY during the initialization of the component. If this variable is specified, it must contain either a valid file name or a valid full path and file name for the Tk dynamic link library to load during initialization. The default value of this variable is "TK.DLL", if it has not been specified.

This variable is read ONLY during the initialization of the component. If this variable is specified, it must contain a valid long integer in either the standard decimal format or the hexadecimal format "0x00000000" to be considered valid. Please refer to the TCLBOptions page for the available options.