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vb.net屏幕录像 c# 屏幕录像
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VB.NET 摄像头编程求助
这是6.0的vb.net屏幕录像，.net的做些改动就成vb.net屏幕录像！因为我没装摄像头vb.net屏幕录像，就没改vb.net屏幕录像！ Private Declare Function capCreateCaptureWindow Lib "avicap32.dll" _ Alias "capCreateCaptureWindowA" ( _ ByVal lpszWindowName As String, _ ByVal dwStyle As Long, _ ByVal x As Long, _ ByVal y As Long, _ ByVal nWidth As Long, _ ByVal nHeight As Long, _ ByVal hWndParent As Long, _ ByVal nID As Long) As Long Private Const WS_CHILD = H40000000 Private Const WS_VISIBLE = H10000000 Private Const WM_USER = H400 Private Const WM_CAP_START = H400 Private Const WM_CAP_EDIT_COPY = (WM_CAP_START + 30) Private Const WM_CAP_DRIVER_CONNECT = (WM_CAP_START + 10) Private Const WM_CAP_SET_PREVIEWRATE = (WM_CAP_START + 52) Private Const WM_CAP_SET_OVERLAY = (WM_CAP_START + 51) Private Const WM_CAP_SET_PREVIEW = (WM_CAP_START + 50) Private Const WM_CAP_DRIVER_DISCONNECT = (WM_CAP_START + 11) Private Declare Function SendMessage Lib "user32" _ Alias "SendMessageA" ( _ ByVal hwnd As Long, _ ByVal wMsg As Long, _ ByVal wParam As Long, _ lParam As Any) As Long Private Preview_Handle As Long Public Function CreateCaptureWindow( _ hWndParent As Long, _ Optional x As Long = 0, _ Optional y As Long = 0, _ Optional nWidth As Long = 320, _ Optional nHeight As Long = 240, _ Optional nCameraID As Long = 0) As Long Preview_Handle = capCreateCaptureWindow("Video", _ WS_CHILD + WS_VISIBLE, x, y, _ nWidth, nHeight, hWndParent, 1) SendMessage Preview_Handle, WM_CAP_DRIVER_CONNECT, nCameraID, 0 SendMessage Preview_Handle, WM_CAP_SET_PREVIEWRATE, 30, 0 SendMessage Preview_Handle, WM_CAP_SET_OVERLAY, 1, 0 SendMessage Preview_Handle, WM_CAP_SET_PREVIEW, 1, 0 CreateCaptureWindow = Preview_Handle End Function Public Function CapturePicture(nCaptureHandle As Long) As StdPicture Clipboard.Clear SendMessage nCaptureHandle, WM_CAP_EDIT_COPY, 0, 0 Set CapturePicture = Clipboard.GetData End Function Public Sub Disconnect(nCaptureHandle As Long, _ Optional nCameraID = 0) SendMessage nCaptureHandle, WM_CAP_DRIVER_DISCONNECT, _ nCameraID, 0 End Sub 4在form上添加一个PictureBox,一个按钮,Caption设为 Save Pic Dim Video_Handle As Long Private Sub Form_Load() Video_Handle = CreateCaptureWindow(PicCapture.hwnd) End Sub Private Sub Command1_Click() Dim x As StdPicture Set x = CapturePicture(Video_Handle) SavePicture x, "c:\a.bmp" End Sub Private Sub Form_Unload(Cancel As Integer) Disconnect Video_Handle End Sub 追问： 可不可以帮忙写为VB.NET的程序..?我自己运行后显示 未声明 PicCapture 追问： nCameraID = 0 这里在VB.NET下也用不vb.net屏幕录像了Clipboard.GetData 在VB.NET里也要跟参数的..我自己试用VB可以的..希望你能帮忙写一个VB.NET的..因为就算没有摄像头picturebox也会显示黑色的 回答： 你这程序是工程用的！请加多点分！我给你改 追问： 可不可以加我QQ先344568960 因为我积分不多...或许我可以给Q币你怎么的~可以吗？ 追问： 已经补充了积分了~希望能帮忙改成VB.NET的吧~谢谢~ 回答： 建一个picturebox 和 button Imports System.Runtime.InteropServices Public Class Form1 Const WM_CAP_START = H400S Const WS_CHILD = H40000000 Const WS_VISIBLE = H10000000 Const WM_CAP_DRIVER_CONNECT = WM_CAP_START + 10 Const WM_CAP_DRIVER_DISCONNECT = WM_CAP_START + 11 Const WM_CAP_EDIT_COPY = WM_CAP_START + 30 Const WM_CAP_SEQUENCE = WM_CAP_START + 62 Const WM_CAP_FILE_SAVEAS = WM_CAP_START + 23 Const WM_CAP_SET_SCALE = WM_CAP_START + 53 Const WM_CAP_SET_PREVIEWRATE = WM_CAP_START + 52 Const WM_CAP_SET_PREVIEW = WM_CAP_START + 50 Const SWP_NOMOVE = H2S Const SWP_NOSIZE = 1 Const SWP_NOZORDER = H4S Const HWND_BOTTOM = 1 Dim hWnd As Integer Declare Function capGetDriverDescriptionA Lib "avicap32.dll" _ (ByVal wDriverIndex As Short, _ ByVal lpszName As String, ByVal cbName As Integer, _ ByVal lpszVer As String, _ ByVal cbVer As Integer) As Boolean Declare Function capCreateCaptureWindowA Lib "avicap32.dll" _ (ByVal lpszWindowName As String, ByVal dwStyle As Integer, _ ByVal x As Integer, ByVal y As Integer, _ ByVal nWidth As Integer, _ ByVal nHeight As Short, ByVal hWnd As Integer, _ ByVal nID As Integer) As Integer Declare Function SendMessage Lib "user32" Alias "SendMessageA" _ (ByVal hwnd As Integer, ByVal Msg As Integer, _ ByVal wParam As Integer, _ Runtime.InteropServices.MarshalAs(UnmanagedType.AsAny) ByVal lParam As Object) _ As Integer Declare Function SetWindowPos Lib "user32" Alias "SetWindowPos" _ (ByVal hwnd As Integer, _ ByVal hWndInsertAfter As Integer, ByVal x As Integer, _ ByVal y As Integer, _ ByVal cx As Integer, ByVal cy As Integer, _ ByVal wFlags As Integer) As Integer Declare Function DestroyWindow Lib "user32" _ (ByVal hndw As Integer) As Boolean Private Sub PreviewVideo(ByVal pbCtrl As PictureBox) hWnd = capCreateCaptureWindowA(0, _ WS_VISIBLE Or WS_CHILD, 0, 0, 0, _ 0, pbCtrl.Handle.ToInt32, 0) If SendMessage( _ hWnd, WM_CAP_DRIVER_CONNECT, _ 0, 0) Then SendMessage(hWnd, WM_CAP_SET_SCALE, True, 0) SendMessage(hWnd, WM_CAP_SET_PREVIEWRATE, 30, 0) SendMessage(hWnd, WM_CAP_SET_PREVIEW, True, 0) SetWindowPos(hWnd, HWND_BOTTOM, 0, 0, _ pbCtrl.Width, pbCtrl.Height, _ SWP_NOMOVE Or SWP_NOZORDER) Else DestroyWindow(hWnd) End If End Sub Private Sub Form1_Load( _ ByVal sender As System.Object, _ ByVal e As System.EventArgs) Handles MyBase.Load PreviewVideo(PictureBox1) End Sub Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim data As IDataObject Dim bmap As Image SendMessage(hWnd, WM_CAP_EDIT_COPY, 0, 0) data = Clipboard.GetDataObject() If data Is Nothing Then Exit Sub If data.GetDataPresent(GetType(System.Drawing.Bitmap)) Then bmap = CType(data.GetData(GetType( _ System.Drawing.Bitmap)), Image) bmap.Save("d:\a.bmp", System.Drawing.Imaging.ImageFormat.Bmp) MsgBox("完成") End If End Sub End Class
相关问答
Q1: vb.net制作视频录制软件
Option Explicit
Private Sub Command1_Click()
Dim i As Long
For i = 1 To 1000000
DoEvents
List1.AddItem i
Label1.Caption = i
Next i
End Sub
Q2: VB.NET2010如何实现print screen的功能并访问剪切板中的图片并将其保存为BMP？
新建一个工程，在Form1双击，编写：
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim bmp As New Bitmap(1024,768)'这跟你的电脑分辨率有关，要更改
Dim gs As Graphics = Graphics.FromImage(bmp)
gs.CopyFromScreen(0, 0, 0, 0, New Size(1024, 768))'这跟你的电脑分辨率有关，要更改
bmp.Save("C:\myBmp.bmp")
End Sub
把它弄到开始菜单，一打开，桌面就被截了。
Q3: VB.NET怎样播放视频
首先要确定播放vb.net屏幕录像的视频格式是什么格式vb.net屏幕录像，如果是windows media player支持vb.net屏幕录像的格式，直接使用该控件就行vb.net屏幕录像了，如果是单个视频的话，比如命名为myPlayer,则：
myPlayer.url="视频文件完整路径"
Q4: vb.net 的screen的mousedown ，mousemove，mouseup事件
问题：引用原文：“要是换个思路，先截全屏，然后将窗体全屏，让Picturebox占满全屏幕，但是无论利用什么方法(最大化，boderstyle设为none）都遮挡不了任务栏。”
解决方法：经测试，代码可以实现你得要求，即能遮挡任务栏。
设置：在窗体上添加一个PictureBox1,，dock属性设置为Fill。随便导入一张图片用于显示。
代码如下：
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.FormBorderStyle = Windows.Forms.FormBorderStyle.None
Me.WindowState = FormWindowState.Maximized
End Sub
Private Sub PictureBox1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PictureBox1.Click
Me.Close()
End Sub
End Class
程序截图：
Q5: vb.net用form模拟初始屏幕，想在窗体显示后让窗体里的label依次显示“正在初始化A”，“
Public Class Form1
Public str() As String
Public flag As Integer = 0 //标志位vb.net屏幕录像，记录上一次显示vb.net屏幕录像的字符串在数组中的位置
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Timer1.Interval = 2000
Timer1.Start()
str = {"正在初始化A...", "正在初始化B...", "正在初始化C...", "初始化完成vb.net屏幕录像！"}
End Sub
Private Sub Timer1_Tick(sender As Object, e As EventArgs) Handles Timer1.Tick
Label1.Text = str(flag)
flag = flag + 1 //保证下次执行label1.text=str(flag)显示不同内容
If flag = 4 Then //加载完vb.net屏幕录像了，定时器关掉
Timer1.Stop()
End If
End Sub
End Class
运行效果见附件屏幕录像
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