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下面是一个VB抓屏保存为文件的源文件，很不错的，有精力的可以参考一下。
保存在标准模块
Option Explicit
Public Type BITMAPFILEHEADER
bfType(0 To 1) As Byte
bfSize As Long
bfReserved1 As Integer
bfReserved2 As Integer
bfOffBits As Long
End Type
Public Type BITMAPINFOHEADER \'40 bytes
biSize As Long
biWidth As Long
biHeight As Long
biPlanes As Integer
biBitCount As Integer
biCompression As Long
biSizeImage As Long
biXPelsPerMeter As Long
biYPelsPerMeter As Long
biClrUsed As Long
biClrImportant As Long
End Type
Public Declare Function GetDC Lib \"user32\" (ByVal hwnd As Long) As Long
Public Declare Function CreateCompatibleDC Lib \"gdi32\" (ByVal hdc As Long) As Long
Public Declare Function CreateDIBSection Lib \"gdi32\" (ByVal hdc As Long, pBitmapInfo As BITMAPINFOHEADER, ByVal un As Long, lplpVoid As Long, ByVal handle As Long, ByVal dw As Long) As Long
Public 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
Public Declare Function SelectObject Lib \"gdi32\" (ByVal hdc As Long, ByVal hObject As Long) As Long
Public Declare Function DeleteDC Lib \"gdi32\" (ByVal hdc As Long) As Long
Public Declare Function ReleaseDC Lib \"user32\" (ByVal hwnd As Long, ByVal hdc As Long) As Long
Public Declare Function DeleteObject Lib \"gdi32\" (ByVal hObject As Long) As Long
Public Declare Sub CopyMemory Lib \"kernel32\" Alias \"RtlMoveMemory\" (ByVal Destination As Long, ByVal Source As Long, ByVal Length As Long)
Public Const DIB_RGB_COLORS = 0
Public Const SRCCOPY = &HCC0020
\'
\'作者:money
\'Email:2258773@163.com
\'涵数功能:拷屏,保存为BMP文件
\'成功返回真
\'
Public Function CopyScreenToBMP(ByVal szfile As String) As Boolean
Dim w As Long, h As Long
Dim scrDC As Long
Dim DIB As Long, m_DC As Long
Dim BmpInfo As BITMAPINFOHEADER
Dim BmpFileHead As BITMAPFILEHEADER
Dim pData As Long
Dim buff() As Byte
Dim old As Long
Dim L As Long
\'取屏幕 高宽
w = Screen.Width \\ 15
h = Screen.Height \\ 15
\'准备内存DC
m_DC = CreateCompatibleDC(0&)
If m_DC = 0 Then
CopyScreenToBMP = False
Exit Function
End If
\'填充DIB的BMP结构
With BmpInfo
.biBitCount = 24
.biPlanes = 1
.biHeight = h
.biWidth = w
.biSize = 40 \'本结构长度
End With
DIB = CreateDIBSection(m_DC, BmpInfo, DIB_RGB_COLORS, pData, 0, 0)
If DIB = 0 Then
DeleteDC m_DC
CopyScreenToBMP = False
Exit Function
End If
old = SelectObject(m_DC, DIB)
\'拷屏
scrDC = GetDC(0)
BitBlt m_DC, 0, 0, w, h, scrDC, 0, 0, SRCCOPY
\'补足4的倍数
L = (w * 3 + 3) And &H7FFFFFFC
L = L * h
\'分配内存
ReDim buff(1 To L) As Byte
\'取像素数据
CopyMemory VarPtr(buff(1)), pData, L
\'释放资源
SelectObject m_DC, old
DeleteObject DIB
DeleteDC m_DC
ReleaseDC 0, scrDC
\'填充BMPFILE
With BmpFileHead
\'BM标志
.bfType(0) = 66: .bfType(1) = 77
.bfSize = 54 + L \'本文件大小
.bfOffBits = 54 \'像素数据偏移地址
End With
\'写入文件
\'懒得声明变量，直接用 L 存放文件号
L = FreeFile()
Open szfile For Binary As L
\'写入文件头
Put L, 1, BmpFileHead
Put L, , BmpInfo
\'写入实际像素
Put L, , buff()
Close L
CopyScreenToBMP = True
End Function
\'
\'例程
Option Explicit
Private Sub cmdTest_Click()
Dim OK As Boolean
OK = CopyScreenToBMP(\"c:\\test.bmp\")
If OK Then
Set Me.Picture = LoadPicture(\"c:\\test.bmp\")
Else
MsgBox \"CAO,拷屏失败了~\"
End If
End Sub
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