write a program to Highlight a object?
思路：利用api函数实现
代码：
Extern.Declare micHwnd, "GetDesktopWindow", "User32.DLL", "GetDesktopWindow"
Extern.Declare micULong, "GetWindowDC", "User32.DLL", "GetWindowDC", micHwnd
Extern.Declare micInteger, "ReleaseDC", "User32.DLL", "ReleaseDC", micHwnd, micULong
Extern.Declare micULong, "CreatePen", "Gdi32.DLL", "CreatePen", micInteger, micInteger, micDword
Extern.Declare micInteger, "SetROP2", "Gdi32.DLL", "SetROP2", micULong, micInteger
Extern.Declare micULong, "SelectObject", "Gdi32.DLL", "SelectObject", micULong, micULong
Extern.Declare micULong, "DeleteObject", "Gdi32.DLL", "DeleteObject", micULong
Extern.Declare micULong, "GetStockObject", "Gdi32.DLL", "GetStockObject", micInteger
Extern.Declare micULong, "Rectangle", "Gdi32.DLL", "Rectangle", micULong, micInteger, micInteger, micInteger, micInteger
Function HighlightRect (X, Y, W, H, Times)
hDC = Extern.GetWindowDC (Extern.GetDesktopWindow)
hPen = Extern.CreatePen (6, 3, RGB(0, 0, 0)) ' PS_INSIDEFRAME, 3 , RGB(0, 0, 0)
Extern.SetROP2 hDC, 6 ' hDC, R2_NOT
Extern.SelectObject hDC, hPen
Extern.SelectObject hDC, Extern.GetStockObject (5)
For i = 0 to Times * 2 + 1
Extern.Rectangle hDC, X, Y, X + W, Y + H
wait 0, 50
Next
Extern.ReleaseDC Extern.GetDesktopWindow, hDC
Extern.DeleteObject hPen
End Function
