DispOutAt

Posted on March 22, 2014 by vivaclipper

DispOutAt

Displays a value on the screen

Syntax

      DispOutAt( <nRow>      , ;
                    <nCol>      , ;
                    <expression>, ;
                    [<cColor>]  , ;
                    [<lSetPos>]   ) --> NIL

Arguments

<nRow> : Row number of screen to <expression> write

<nCol> : Column number of screen to <expression> write

<expression> : Any expression to write to the screen.

<cColor> : Color string for display

<lSetPos> : Specifies whether or not to update the screen cursor positions ( Row(), Col() after writing

Return

DispOutAt() returns always NIL.

Description

This function write the value of <expression> at the specified cursor position on the screen, using the color <cColor>, if specified.

Note

DispOutAt() don’t obey SET DEVICE setting and write always to the screen

Example

      DispOutAt( 0, 0, "Here upper left corner of screen", "W+/R" )

         is equvalent to :

         @ 0,0  SAY ""Here upper left corner of screen" COLOR  "W+/G"

Seealso

@ … SAY, Col(), DevOut(), DispBegin(), DispCount(), DispEnd(), DispOutAt(), OutStd(), QOut() | QQOut(), Row(), SetPos()

DispOut

Posted on March 22, 2014 by vivaclipper

DispOut

Displays a value on the screen

Syntax

      DispOut( <expression>, [<cColor>] ) --> NIL

Arguments

<expression> : Any expression to write to the screen.

<cColor> : Color string for display

Return

DispOut() returns always NIL.

Description

This function write the value of <expression> at the current cursor position on the screen, using the color <cColor>, if specified.

Note

DispOut() don’t obey SET DEVICE setting and write always to the screen

Example

      SetPos( 0, 0 )
         DispOut( "Here upper left corner of screen", "W+/R" )

         is equvalent to :

          @ 0,0  SAY ""Here upper left corner of screen" COLOR  "W+/G"

Seealso

@ … SAY, Col(), DevOut(), DispBegin(), DispCount(), DispEnd(), DispOutAt(), OutStd(), QOut() | QQOut(), Row(), SetPos()

DevPos

Posted on March 21, 2014 by vivaclipper

DevPos

Moves the cursor or printhead to a row and column coordinate

Syntax

      DevPos( <nRow>, <nCol> ) --> NIL

Arguments

@ <nRow>, <nCol> : Coordinates for write; screen of printer depending to SET DEVICE setting.

Return

DevPos() returns always NIL.

Description

<nRow>, <nCol> are row and column coordinates and positions the screen cursor or printhead accordingly. Coordinates begin at point 0, 0 which is the upper left corner of the screen, or paper.

IF DEVICE SETted to SCREEN, DevPos() moves the screen cursor to the specified coordinates and updates Row() and Col().

IF DEVICE SETted to PRINTER, DevPos() moves the printhead to the new row and column coordinate and updates PRow() and PCol().

Notes

SetPrc() adjust the internal counters of PRow() and PCol().

When printer output is redirected to a file by SET PRINTER TO command, DevPos() output is recorded in that file.

Seealso

@…SAY, Col(), DevOut(), PCol(), PRow(), QOut() | QQOut(), ROW(), SET DEVICE, SetPos(), SetPrc()

DevOutPict

Posted on March 21, 2014 by vivaclipper

DevOutPict

Writes a PICTURE formatted value to the current device.

Syntax

      DevOutPict( <expression>, <cPicture> [,<cColor>] ) --> NIL

Arguments

<expression> : Any valid expression to write to the device assigned by SET DEVICE command

<cPicture> : A valid PICTURE format string.

<cColor> : A valid color codes string for value to write. Default is current color setting

Returns

DevOutPict() always returns NIL

Description

DevOutPict() is a console function that outputs the value of an expression to the screen or the printer with defined PICTURE and color. Output device depens on current device.

Example

      DevOutPict( CUST->DEBIT, "99,999.99" )

Seealso

@…SAY, Col(), DevOut(), DevPos(), QOut() | QQOut(), Row(), SET DEVICE, SetPos(), Transform()

DevOut

Posted on March 21, 2014 by vivaclipper

DevOut

Writes a value to the current device

Syntax

      DevOut( <expression>, [<cColor>], [<nRow>, <nCol>] ) --> NIL

Arguments

<expression> : Any valid expression to write to the device assigned by SET DEVICE command

<cColor> : A valid color codes string for value to write. Default is current color setting <nRow> and

<nCol> : Row and column value for device to write <expression>. Defaults is ROW() and COL() if current device is screen and PRow() and PCol() for the printer.

Return

DevOut() returns always NIL

Description

DevOut() is a console function that outputs the value of an expression to the screen or the printer depending on current device.

Example

      // Write a string at upper left corner of screen :

      DevOut( "Here is upper left corner", "W+/R", 0, 0  )

        Equivalent usage :

      @ 0, 0 SAY "Here is upper left corner" COLOR "W+/R"

Seealso

@…SAY, Col(), DevOutPict(), DevPos(), QOut() | QQOut(), Row(), SET DEVICE, SetPos()

SET CURSOR

Posted on February 16, 2014 by vivaclipper

SET CURSOR

Toggle the screen cursor on or off

Syntax

      SET CURSOR ON | off | <xlToggle>

Arguments

ON enables the cursor display.

OFF disables the cursor display.

<xlToggle> is a logical expression that must be enclosed in parentheses. A value of true (.T.) is the same as ON, and a value of false (.F.) is the same as OFF.

Description

SET CURSOR toggles the screen cursor on or off. When the CURSOR is OFF, keyboard entry and screen display are unaffected. The cursor is merely hidden and data entry may still be accomplished without the cursor being visible. ROW() and COL() are updated as if the cursor were visible.

This command suppresses the cursor while the screen is being painted. Ideally, the only time the cursor shows in a production program is when the user is editing GETs, MEMOEDIT(), or some kind of line edit.

Examples

      .  This example shows a typical use of SET CURSOR:

      LOCAL lAnswer := .F.
      @ 24, 0
      @ 24, 15 SAY "Do you want to QUIT? [Y/N]";
         GET lAnswer;
         PICTURE "Y"
      SET CURSOR ON
      READ
      SET CURSOR OFF

Seealso

COL(), ROW(), SET CONSOLE, SETCURSOR(), SETPOS()