Option ExplicitPrivate Type sPOINT x As Long y As LongEnd TypePrivate Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As LongPrivate Declare Function GetPixel Lib "gdi32" (ByVal hdc As Long, ByVal x As Long, ByVal y As Long) As LongPrivate Declare Function SetWindowPos Lib "user32" (ByVal hwnd As Long, ByVal hWndInsertAfter As Long, ByVal x As Long, ByVal y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As LongPrivate Const HWND_TOPMOST& = -1' 将窗口置于列表顶部，并位于任何最顶部窗口的前面Private Const SWP_NOSIZE& = &H1' 保持窗口大小Private Const SWP_NOMOVE& = &H2' 保持窗口位置Private Sub Form_Load()SetWindowPos Me.hwnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE Or SWP_NOSIZE' 将窗口设为总在最前End Sub'把long型的RGB值分解成3个分量Sub ColorRGB(Color As Long, C() As Integer) Const ByN As Integer = 256 Const ByN2 As Long = 65536 C(1) = (Color Mod ByN) C(2) = ((Color Mod ByN2) ByN) C(3) = (Color ByN2)End SubPrivate Sub GetPoint() Dim p1(497, 447) As Long, p2(497, 447) As Long, C1(3) As Integer, C2(3) As Integer '数组大小匹配于图片的大小 Dim pic1 As sPOINT, pic2 As sPOINT '设置两张图片的屏幕位置 pic1.x = 8 pic1.y = 192 pic2.x = 517 pic2.y = 192 Dim h As Long, hD As Long, r As Long, i As Integer, j As Integer hD = GetDC(0) '读入两张图片 For i = 0 To 497 For j = 0 To 447 p1(i, j) = GetPixel(hD, i + pic1.x, j + pic1.y) p2(i, j) = GetPixel(hD, i + pic2.x, j + pic2.y) Next Next '对比，标记差异 Dim t As Boolean t = True For i = 0 To 497 For j = 0 To 447 Call ColorRGB(p1(i, j), C1()) Call ColorRGB(p2(i, j), C2()) If (Abs(C1(1) - C2(1)) > 30 Or Abs(C1(2) - C2(2)) > 30 Or Abs(C1(3) - C2(3)) > 30) Then t = Not t If t Then Picture1.ForeColor = &H0& Else Picture1.ForeColor = &HFF00& End If Else Picture1.ForeColor = p1(i, j) End If Picture1.PSet (i, j) Next NextEnd SubPrivate Sub Picture1_Click()Me.Visible = FalseDoEventsGetPointMe.Visible = TrueEnd Sub