Tag Archives: DEFINE WINDOW

Hello World – 2

Posted on by vivaclipper

In the our first example in first Quick Start page, we wrote the “Hello World” clause on the title bar. Now, let’s put it on the form.

Build a new project with “HelloWorld2” name, copy HelloWord.prg to HelloWorld2.prg and change it as below:

#include <hmg.ch>
PROCEDURE Main()
   DEFINE WINDOW frmHWLabel ;
      AT 0,0 ;
      WIDTH 400 ;
      HEIGHT 200 ;
      TITLE 'Hello World-2' ;
      MAIN 

      DEFINE LABEL lblHello
         ROW 75
         COL 125
         VALUE "Hello World !"
         FONTNAME "Lucida"
         FONTSIZE 16
      END LABEL

    END WINDOW 

    ACTIVATE WINDOW frmHWLabel

RETURN // Main()

DEFINE LABEL and END LABEL statements are for “Label” definition structure for the a window ( in this example Windows named as “frmHWLabel ” ). Label itself must have a name (“lblHello” in this example), and this name must be unique, such as a variable name. Beginning these names with a descriptive prefix ( “lbl” in the example) is a good programming practice.

Between DEFINE – END statements there are main properties of this label. Row, col numbers ( in pixels of course),value (for labels, value is a string constant to write in the your form/window) and font properties (NAME and SIZE)

Almost every GUI control definitions HMG have two syntax : With DEFINE and END structure and with @ command.Thus in the above example instead of DEFINE LABEL and END LABEL structure, you can use alternate @ syntax :

@ 75, 125 LABEL lblHello ;
          VALUE "Hello World !" ;
          FONT "Lucida" ; 
          SIZE 16

A last note for this example : place

CENTER WINDOW frmHWLabel

statement END WINDOW statement and notice that how much HMG is powerful.

HelloWordLabel

Message multiple values

Posted on by vivaclipper

MsgMulti ( aka MsM) is a message function accept multiple and any type of data.

Download here ( source only ).