If QuickCAD is run from program manager or by another application with the command line parameter 'DDE', it runs hidden and will accept DDEexecute commands.

The syntax for controlling QuickCAD is as follows :-

Application : QuickCAD
Topic : Form
Item : <var>

The operation performed by QuickCAD varies according to the contents of <var>

MIN - hides the QuickCAD window

MAX - maximizes and displays the QuickCAD window

END - shuts down QuickCAD

MANUALCOPY - disables automatic copy of image

AUTOCOPY - enables automatic copy of image (default)

VIEW - displays the QuickCAD windows in 'Always on Top' mode. Defaults to an image representing 1/4 of the available screen area but this can be changed using SETW & SETH.

SETX ### - sets left edge position of the QuickCAD window to ### pixels from the left edge of the screen.

SETY ### - sets top edge position of the QuickCAD window to ### pixels from the top edge of the screen.

SETW ### - sets QuickCAD window width to ### pixels.

SETH ### - sets QuickCAD window height to ### pixels.

COPY - Copies the displayed image to the clipboard (used when MANUALCOPY has been applied)

If <var> is a valid QuickCAD filename then QuickCAD will attempt to load the file and, if successful, copy the picture result to the Windows clipboard (unless Autocopy is disabled).

A DDE request QuickCAD | Form | DDEreply will send a message back to the client application that all is OK and can be used to check that QuickCAD is running and responding to DDE properly.
