VB截屏（拷贝屏幕图像）代码

一时对图片处理特别感兴趣.....下面就来转一篇有关于截屏的文章.
本文转自:http://im0518.blog.163.com/blog/static/2655641720071022101445585/
两种方法：感觉第一种方法来得直接一些
方法一：
Private Declare Function GetDesktopWindow Lib "user32" () As Long
Private Declare Function GetDC Lib "user32" (ByVal hWnd As Long) As Long
Private Declare Function ReleaseDC Lib "user32" (ByVal hWnd As Long, ByVal hdc As Long) As Long
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 Const SRCCOPY = &HCC0020
Sub saveMyScreen(filePath As String)
'filePath为截屏要保存的路径
Picture1.Width = Screen.Width
Picture1.Height = Screen.Height
Picture1.Visible = False
Dim lngDesktopHwnd As Long
Dim lngDesktopDC As Long
Picture1.AutoRedraw = True
Picture1.ScaleMode = vbPixels
lngDesktopHwnd = GetDesktopWindow
lngDesktopDC = GetDC(lngDesktopHwnd)
Call BitBlt(Picture1.hdc, 0, 0, Screen.Width, Screen.Height, lngDesktopDC, 0, 0, SRCCOPY)
Picture1.Picture = Picture1.Image
Call ReleaseDC(lngDesktopHwnd, lngDesktopDC)
SavePicture Picture1, filePath '保存图片
End Sub
方法二：
'form中放一个按钮和一个图片框
Private Declare Sub keybd_event Lib "user32" (ByVal bVk As Byte, ByVal bScan As Byte, ByVal dwFlags As Long, ByVal dwExtraInfo As Long)
Const theScreen = 0
Const theForm = 1
Private Sub Command1_Click()
Call keybd_event(vbKeySnapshot, theScreen, 0, 0)
DoEvents
Picture1.Picture = Clipboard.GetData(vbCFBitmap)
End Sub
方法一修改后：
Private Declare Function GetDesktopWindow Lib "user32" () As Long
Private Declare Function GetDC Lib "user32" (ByVal hWnd As Long) As Long
Private Declare Function ReleaseDC Lib "user32" (ByVal hWnd As Long, ByVal hdc As Long) As Long
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 Const SRCCOPY = &HCC0020
Sub saveMyScreen(filePath As String)
Dim lngDesktopHwnd As Long
Dim lngDesktopDC As Long
Picture1.AutoRedraw = True
Picture1.ScaleMode = vbPixels
lngDesktopHwnd = GetDesktopWindow
lngDesktopDC = GetDC(lngDesktopHwnd)
'filePath为截屏要保存的路径
Me.Visible = False
Me.WindowState = 2
Picture1.Width = Screen.Width
Picture1.Height = Screen.Height
' Picture1.Visible = False
Call BitBlt(Picture1.hdc, 0, 0, Screen.Width, Screen.Height, lngDesktopDC, 0, 0, SRCCOPY)
Picture1.Picture = Picture1.Image
Call ReleaseDC(lngDesktopHwnd, lngDesktopDC)
Me.Visible = True
' SavePicture Picture1, filePath '保存图片
End Sub
Private Sub Command1_Click()
saveMyScreen "filePath"
End Sub
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