添加一个Picture1控件，一个timer控件，一个label控件
'API函数声明
Option Explicit
Private Declare Function BitBlt Lib "gdi32" (ByVal hDestDC As Long, ByVal x As Long, ByVal y As Long, _
ByVal nWidth As Long, ByVal nHeight As Long, ByVal hSrcDC As Long, ByVal xSrc As Long, _
ByVal ySrc As Long, ByVal dwRop As Long) As Long
Private Declare Function GetCursorPos Lib "user32" (lpPoint As POINTAPI) As Long
Private Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As Long
Private Declare Function GetPixel Lib "gdi32" (ByVal hdc As Long, ByVal x As Long, _
ByVal y As Long) As Long
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Private Type POINTAPI '创建用户自定义的类型
x As Long '定义X的数据类型
y As Long '定义Y的数据类型
End Type
Private Sub Form_Load()
End Sub
Private Sub Timer1_Timer()
Dim P1 As POINTAPI, h As Long, h1 As Long, r1 As Long
GetCursorPos P1
h1 = GetDC(h)
r1 = GetPixel(h1, P1.x, P1.y)
If r1 = -1 Then
BitBlt Picture1.hdc, 0, 0, 1, 1, h1, P1.x, P1.y, vbSrcCopy
r1 = Picture1.Point(0, 0)
Else
Picture1.PSet (0, 0), r1
End If
label2.Caption = Hex$(r1)
Picture1.BackColor = r1
End Sub
Private Sub Command1_Click()
End
End Sub