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| Option Explicit
Private Declare Function mciSendString Lib "winmm.dll" Alias "mciSendStringA" (ByVal lpstrCommand As String, ByVal lpstrReturnString As String, ByVal uReturnLength As Long, ByVal hwndCallback As Long) As Long
Private Declare Function CreateDC Lib "gdi32" Alias "CreateDCA" (ByVal lpDriverName As String, ByVal lpDeviceName As String, ByVal lpOutput As String, lpInitData As Long) As Long
Private Declare Function CreateCompatibleBitmap Lib "gdi32" (ByVal hdc As Long, ByVal nWidth As Long, ByVal nHeight As Long) As Long
Private Declare Function CreateCompatibleDC Lib "gdi32" (ByVal hdc As Long) As Long
Private Declare Function SelectObject Lib "gdi32" (ByVal hdc As Long, ByVal hObject 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 Declare Function OpenClipboard Lib "user32" (ByVal hwnd As Long) As Long
Private Declare Function EmptyClipboard Lib "user32" () As Long
Private Declare Function SetClipboardData Lib "user32" (ByVal wFormat As Long, ByVal hMem As Long) As Long
Private Declare Function CloseClipboard Lib "user32" () As Long
Private Declare Function DeleteDC Lib "gdi32" (ByVal hdc As Long) As Long
Private Declare Function ReleaseDC Lib "user32" (ByVal hwnd As Long, ByVal hdc As Long) As Long
Private Declare Function GetWindowRect Lib "user32" (ByVal hwnd As Long, lpRect As RECT) As Long
Private Const CCHDEVICENAME = 32
Private Const CCHFORMNAME = 32
Private Type RECT
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
Private Sub Command1_Click()
Dim RetVal As Long
RetVal = mciSendString("close avi", 0, 0, 0)
RetVal = mciSendString("open c:\capture.avi alias avi parent " & Picture1.hwnd & " style child", 0, 0, 0)
RetVal = mciSendString("play avi", 0, 0, 0)
End Sub
Private Sub Command2_Click()
mciSendString "pause avi ", 0, 0, 0
End Sub
Function ScreenCapture(ByVal Left As Integer, ByVal Top As Integer, ByVal Right As Integer, ByVal Bottom As Integer) As Boolean
Dim rWidth As Integer, rHeight As Integer
Dim SourceDC As Long, DestDC As Long, bHandle As Long, dHandle As Long, wnd As Long
rWidth = Right - Left
rHeight = Bottom - Top
SourceDC = CreateDC("DISPLAY", 0, 0, 0)
DestDC = CreateCompatibleDC(SourceDC)
bHandle = CreateCompatibleBitmap(SourceDC, rWidth, rHeight)
SelectObject DestDC, bHandle
BitBlt DestDC, 0, 0, rWidth, rHeight, SourceDC, Left, Top, &HCC0020
wnd = Screen.ActiveForm.hwnd
OpenClipboard wnd
EmptyClipboard
ScreenCapture = SetClipboardData(2, bHandle)
CloseClipboard
DeleteDC DestDC
ReleaseDC dHandle, SourceDC
End Function
Private Sub Command3_Click()
Dim picRect As RECT
GetWindowRect Picture1.hwnd, picRect
ScreenCapture picRect.Left, picRect.Top, picRect.Right, picRect.Bottom
Picture2.Picture = Clipboard.GetData
End Sub
Private Sub Form_Load()
Picture1.Appearance = 0
Picture2.Appearance = 0
Command1.Caption = "Play"
Command2.Caption = "Pause"
Command3.Caption = "Screenshot"
End Sub |
