函数:
Option Compare Database
Option Explicit
Public Declare Sub Sleep Lib "Kernel32" (ByVal dwmilliseconds As Long)
Private Declare Sub keybd_event Lib "user32" (ByVal bVk As Byte, ByVal bScan As Byte, ByVal dwFlags As Long, ByVal dwExtraInfo As Long)
Private Const KEYEVENTF_KEYUP = &H2
Private Const VK_SNAPSHOT = &H2C
Private Const VK_MENU = &H12
'剪贴板函数
Private Declare Function OpenClipboard Lib "user32" (ByVal hwnd As Long) As Long
Private Declare Function CloseClipboard Lib "user32" () As Long
Private Declare Function GetClipboardData Lib "user32" (ByVal Format As Long) As Long
'OLE函数
Private Type Clsid
Data1 As Long
Data2 As Integer
Data3 As Integer
Data4(0 To 7) As Byte
End Type
Private Declare Function CLSIDFromString Lib "ole32" (ByVal lpsz As Long, pclsid As Clsid) As Long
'GDI函数
Private Type GdiplusStartupInput
GdiplusVersion As Long
DebugEventCallback As Long
SuppressBackgroundThread As Long
SuppressExternalCodecs As Long
End Type
Private Type EncoderParameter
Guid As Clsid
NumberOfValues As Long
type As Long
value As Long
End Type
Private Type EncoderParameters
count As Long
Parameter As EncoderParameter
End Type
Private Const CLSID_JPG As String = "{557CF401-1A04-11D3-9A73-0000F81EF32E}"
Private Const EncoderQuality As String = "{1D5BE4B5-FA4A-452D-9CDD-5DB35105E7EB}"
Private Declare Function GdiplusStartup Lib "gdiplus" (token As Long, inputbuf As GdiplusStartupInput, Optional ByVal outputbuf As Long = 0) As Long
Private Declare Function GdiplusShutdown Lib "gdiplus" (ByVal token As Long) As Long
Private Declare Function GdipCreateBitmapFromHBITMAP Lib "gdiplus" (ByVal hbm As Long, ByVal hpal As Long, bitmap As Long) As Long
Private Declare Function GdipDisposeImage Lib "gdiplus" (ByVal Image As Long) As Long
Private Declare Function GdipSaveImageToFile Lib "gdiplus" (ByVal Image As Long, ByVal filename As Long, clsidEncoder As Clsid, encoderParams As Any) As Long
Public Function ScreenSaveAs(FilePath As String) As Boolean '剪贴板图片保存JPG文件
Dim hMem As Long
Dim bitmap As Long
Dim GDI_Token As Long
Dim GpInput As GdiplusStartupInput
Dim ReturnValue As Long
Dim Params As EncoderParameters
Dim Quality As Long
ScreenSaveAs = False
GetScreen
DoEvents
Sleep 100
'获取剪贴板BMP数据的Handle
OpenClipboard 0&
hMem = GetClipboardData(2)
CloseClipboard
If hMem = 0 Then MsgBox "未找到截屏数据": Exit Sub
'初始化GDI+
GpInput.GdiplusVersion = 1
ReturnValue = GdiplusStartup(GDI_Token, GpInput)
If ReturnValue <> 0 Then MsgBox "初始化GDI+失败!": Exit Function
'创建GDI+的bitmap对象
GdipCreateBitmapFromHBITMAP hMem, 0, bitmap
'JPG压缩参数设置
Quality = 50
With Params
.count = 1
With .Parameter
.Guid = GetEncoderClsid(EncoderQuality)
.NumberOfValues = 1
.type = 4
.value = VarPtr(Quality)
End With
End With
GdipSaveImageToFile bitmap, StrPtr(CurrentProject.Path & "\001.jpg"), GetEncoderClsid(CLSID_JPG), Params
GdipDisposeImage bitmap
GdiplusShutdown GDI_Token
ScreenSaveAs = True
End Function
Private Function GetScreen()
keybd_event VK_MENU, 0, 0, 0
keybd_event VK_SNAPSHOT, 0, 0, 0
keybd_event VK_SNAPSHOT, 0, KEYEVENTF_KEYUP, 0
keybd_event VK_MENU, 0, KEYEVENTF_KEYUP, 0
End Function
Private Function GetEncoderClsid(CLSIDString As String) As Clsid
CLSIDFromString StrPtr(CLSIDString), GetEncoderClsid
End Function
调用方法:
ScreenSaveAs "路径并/文件名.jpg"