VERSION 5.00
Begin VB.Form Form1 
   AutoRedraw      =   -1  'True
   Caption         =   "Form1"
   ClientHeight    =   3195
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   ScaleHeight     =   3195
   ScaleWidth      =   4680
   StartUpPosition =   3  '窗口缺省
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Gradient(TheObject As Object, Redval, Greenval, Blueval)
    Dim Step, i, T, L, R, B
    Step = (TheObject.Height / 60)
    T = 0
    L = 0
    R = TheObject.Width
    B = T + Step
    '使用循環在窗體上從上至下依次繪制多個矩形
    For i = 1 To 60
        TheObject.Line (L, T)-(R, B), RGB(Redval, Greenval, Blueval), BF
        Redval = Redval - 4
        Greenval = Greenval - 4
        Blueval = Blueval - 4
        If Redval <= 0 Then Redval = 0
        If Greenval <= 0 Then Greenval = 0
        If Blueval <= 0 Then Blueval = 0
        T = B
        B = B + Step
    Next
End Sub

Private Sub Form_Resize()
    Gradient Form1, 0, 0, 255
End Sub