format()

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   4200
   ClientLeft      =   60
   ClientTop       =   375
   ClientWidth     =   7815
   LinkTopic       =   "Form1"
   ScaleHeight     =   4200
   ScaleWidth      =   7815
   StartUpPosition =   3  'Windows Default
   Begin VB.OptionButton optSi 
      Caption         =   "Option1"
      Height          =   255
      Left            =   5520
      TabIndex        =   8
      Top             =   3600
      Width           =   1215
   End
   Begin VB.OptionButton optD2 
      Caption         =   "Option1"
      Height          =   255
      Left            =   120
      TabIndex        =   5
      Top             =   1320
      Width           =   1335
   End
   Begin VB.HScrollBar hsbCA 
      Height          =   255
      Left            =   120
      TabIndex        =   2
      Top             =   840
      Width           =   4095
   End
   Begin VB.HScrollBar hsbBA 
      Height          =   255
      Left            =   120
      TabIndex        =   1
      Top             =   480
      Width           =   4095
   End
   Begin VB.PictureBox pctBox 
      Height          =   855
      Left            =   1800
      ScaleHeight     =   795
      ScaleWidth      =   2715
      TabIndex        =   0
      Top             =   1440
      Width           =   2775
   End
   Begin VB.Label lblX2 
      Caption         =   "Label1"
      Height          =   375
      Left            =   5400
      TabIndex        =   7
      Top             =   2880
      Width           =   1455
   End
   Begin VB.Label lblX1 
      Caption         =   "Label1"
      Height          =   375
      Left            =   5280
      TabIndex        =   6
      Top             =   1680
      Width           =   1095
   End
   Begin VB.Label lblCA 
      Caption         =   "Label1"
      Height          =   255
      Left            =   4800
      TabIndex        =   4
      Top             =   1080
      Width           =   1335
   End
   Begin VB.Label lblBA 
      Caption         =   "Label1"
      Height          =   255
      Left            =   4920
      TabIndex        =   3
      Top             =   600
      Width           =   1095
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
 
Dim a, b, c As Double
Dim x1, x2, dis, xr, xi As Double
 
Private Sub divisiones(nx As Integer, ny As Integer)
Dim i As Integer
Dim x, xinc, y, yinc As Single
pctBox.DrawWidth = 1
xinc = 20 / (nx - 1)
x = -10
For i = 1 To nx
pctBox.Line (x, 0)-(x, -1)
x = x + xinc
Next i
yinc = 10 / (ny - 1)
y = -5
For i = 1 To ny
pctBox.Line (-1, y)-(0, y)
y = y + yinc
Next i
pctBox.DrawWidth = 2
End Sub
 
Private Sub cmdSalir_Click()
End
End Sub
Private Sub Form_Load()
pctBox.Scale (-10, 5)-(10, -5)
End Sub
 
Private Sub hsbBA_Change()
a = 1
b = hsbBA.Value / 10#
c = hsbCA.Value / 10#
lblBA.Caption = b
lblCA.Caption = c
dis = b ^ 2 - 4 * a * c
If optD2.Value = True Then 'mantener
pctBox.AutoRedraw = True
Else: 'borrar
pctBox.AutoRedraw = False
pctBox.Cls
End If
If dis > 0 Then
x1 = (-b + Sqr(dis)) / (2 * a)
x2 = (-b - Sqr(dis)) / (2 * a)
lblX1.Caption = Format(x1, "###0.000")
lblX2.Caption = Format(x2, "###0.000")
pctBox.PSet (x1, 0), vbRed
pctBox.PSet (x2, 0), vbRed
ElseIf dis = 0 Then
x1 = -b / (2 * a)
x2 = x1
lblX1.Caption = Format(x1, "###0.000")
lblX2.Caption = ""
pctBox.PSet (x1, 0), vbGreen
Else
xr = -b / (2 * a)
xi = Sqr(-dis) / (2 * a)
lblX1.Caption = Format(xr, "###0.000")
lblX2.Caption = Format(xi, "###0.000")
pctBox.PSet (xr, xi), vbBlue
pctBox.PSet (xr, -xi), vbBlue
End If
If optSi = True Then
Call divisiones(10, 5)
End If
End Sub
 
Private Sub hsbCA_Change()
a = 1
b = hsbBA.Value / 10#
c = hsbCA.Value / 10#
lblBA.Caption = b
lblCA.Caption = c
dis = b ^ 2 - 4 * a * c
If optD2.Value = True Then 'mantener
pctBox.AutoRedraw = True
Else: 'borrar
pctBox.AutoRedraw = False
pctBox.Cls
End If
If dis > 0 Then
x1 = (-b + Sqr(dis)) / (2 * a)
x2 = (-b - Sqr(dis)) / (2 * a)
lblX1.Caption = Format(x1, "###0.000")
lblX2.Caption = Format(x2, "###0.000")
pctBox.PSet (x1, 0), vbRed
pctBox.PSet (x2, 0), vbRed
ElseIf dis = 0 Then
x1 = -b / (2 * a)
x2 = x1
lblX1.Caption = Format(x1, "###0.000")
lblX2.Caption = ""
pctBox.PSet (x1, 0), vbGreen
Else
xr = -b / (2 * a)
xi = Sqr(-dis) / (2 * a)
lblX1.Caption = Format(xr, "###0.000")
lblX2.Caption = Format(xi, "###0.000")
pctBox.PSet (xr, xi), vbBlue
pctBox.PSet (xr, -xi), vbBlue
End If
If optSi = True Then
Call divisiones(10, 5)
End If
End Sub
 
Private Sub optD1_Click()
pctBox.AutoRedraw = True
pctBox.Cls
pctBox.DrawWidth = 1
pctBox.Line (-90, 0)-(90, 0), vbBlack
pctBox.Line (0, -45)-(0, 45), vbBlack
pctBox.DrawWidth = 2
End Sub
 
Private Sub pctBox_Paint()
pctBox.AutoRedraw = True
pctBox.Line (-90, 0)-(90, 0), vbBlack
pctBox.Line (0, -45)-(0, 45), vbBlack
pctBox.DrawWidth = 2
End Sub