HELP FOR SHOW A LINE ON A DIALOG

[Silvio.Falconi]

DrawLine( 0,300 )...


function DrawLine( x, y )
Local hdc:= oDlgMain:GetDc()
Local hPen := CreatePen( 0, 1, CLR_BLUE )
Local hOldPen := SelectObject( oDlgMain:hDc, hPen )

MoveTo( oDlgMain:hDC, x, y)
LineTo( oDlgMain:hDC, x, y )

SelectObject( oDlgMain:hDc, hOldPen )
DeleteObject( hPen )
oDlgMain:ReleaseDc()

return nil


WHY NOT RUN ?

[cnavarro]

Try

Code: Select all  Expand view

DrawLine( 0,300, 10, 400 )


function DrawLine( x, y, x1, y1 )
Local hdc:= oDlgMain:GetDc()
Local hPen := CreatePen( 0, 1, CLR_BLUE )
Local hOldPen := SelectObject( oDlgMain:hDc, hPen )

MoveTo( oDlgMain:hDC, x, y)
LineTo( oDlgMain:hDC, x1, y1 )

SelectObject( oDlgMain:hDc, hOldPen )
DeleteObject( hPen )
oDlgMain:ReleaseDc()

return nil


 

[Silvio.Falconi]

OK THANKS

but How I can make to show a line when the button is pressed and hide the line when the button is released ?

sample :

Code: Select all  Expand view

#include "fivewin.ch"
#include "constant.ch"
#include "wcolors.ch"

STATIC oDlgMain

Function Test()


   Local  nBottom   := 22
   Local  nRight    := 55
   Local  nWidth :=  Max( nRight * DLG_CHARPIX_W, 180 )
   Local  nHeight := nBottom * DLG_CHARPIX_H


DEFINE DIALOG oDlgMain     ;
  TITLE "Slot" ;
  SIZE nWidth, nHeight PIXEL          ;
  STYLE nOr( DS_MODALFRAME, WS_POPUP, WS_CAPTION,  4 )



ACTIVATE DIALOG oDlgMain CENTERED ;
ON INIT (ShowButtonLines())
return nil
//--------------------------------------------------------------------------//
Function ShowButtonLines()

   Local  ob[5]
   Local oFont
   local hsize:= 15
   local Vsize:= 15

 @ 150,10  BTNBMP ob[1] OF oDlgMain  ;
            SIZE hsize,Vsize   ;
            PROMPT "1"  2007 ;
            FONT oFont BOTTOM ;
            ACTION DRAWBOX( hDC, 160, 30, 160, 320, CLR_HRED,1 )

    ob[1]:lEllipse = .T.
return nil
//-------------------------------------------------------------------------------------------------//
 STATIC FUNCTION DRAWBOX( hDC, nTop, nLeft, nBottom, nRight, nColor,nTipo )
    LOCAL hPen := CREATEPEN( PS_SOLID, 4, nColor )
    LOCAL hOldPen := SELECTOBJECT( hDC, hPen )
    do case
        case nTipo = 1
               MOVETO( hDC, nLeft, nTop )
               LINETO( hDC, nRight, nTop )
        case nTipo = 2
               MOVETO( hDC, nRight, nBottom  )
               LINETO( hDC,nBottom, nRight )
            case nTipo = 3
               MOVETO( hDC,nLeft, nTop)
               LINETO( hDC, nBottom, nRight )
          endcase
    SELECTOBJECT( hDC, hOldPen )
    DELETEOBJECT( hPen )
    RETURN NIL









 

[cnavarro]

Silvio
One possibility is:
To delete the selected line the pen like the background of the dialogue or control and repainting the line