我用C# 做了一个摄像头拍照 XP系统好使 WIN7就一次好使一次又不好使没准

Question

我用C# 做了一个摄像头拍照 XP系统好使 WIN7就一次好使一次又不好使没准  好使的时候就直接连上了  显示器能看到 摄像头照到的地方  不好使的时候  就是弹出一个框  捕捉视频源 无论我怎么选择 都不好使  视频的地方 一片黑色的。 怎么解决给点提示  求帮忙啊

Answer 1

不知道你怎么调用接口的，查查文档看看是否支持WIN7

Answer 2

支持XP，似乎程序里有不支持win7的函数，慢慢查。

Answer 3

using System;
using System.Runtime.InteropServices;namespace shoes
{
    public class ClassVedioCapture
    {
        private int hCaptureM;
        private bool isUnLoad = false;        public ClassVedioCapture()
        {
        }        ~ClassVedioCapture()
        {
            if (!isUnLoad)
            {
                this.UnLoad();
            }
        }        [DllImport("avicap32.dll")]
        private static extern int capCreateCaptureWindow(string strWindowName, int dwStyle, int x, int y, int width, int height, int hwdParent, int nID);
        [DllImport("user32.dll")]
        private static extern int SendMessage(int hwnd, int wMsg, int wParam, int lParam);
        [DllImport("user32.dll")]
        private static extern int SendMessage(int hwnd, int wMsg, int wParam, string lParam);
        [DllImport("Kernel32.dll")]
        private static extern bool CloseHandle(int hObject);        public bool Initialize(System.Windows.Forms.Control aContainer, int intWidth, int intHeight)
        {            hCaptureM = capCreateCaptureWindow("", 0x40000000 | 0x10000000, 0, 0, intWidth, intHeight, aContainer.Handle.ToInt32(), 1);
            if (hCaptureM == 0) return false;            int ret = SendMessage(hCaptureM, 1034, 0, 0);
            if (ret == 0)
            {
                CloseHandle(hCaptureM);
                return false;
            }
            //WM_CAP_SET_PREVIEW
            ret = SendMessage(hCaptureM, 1074, 1, 0);
            if (ret == 0)
            {
                this.UnLoad();
                return false;
            }
            //WM_CAP_SET_SCALE
            ret = SendMessage(hCaptureM, 1077, 1, 0);
            if (ret == 0)
            {
                this.UnLoad();
                return false;
            }
            //WM_CAP_SET_PREVIEWRATE
            ret = SendMessage(hCaptureM, 1076, 66, 0);
            if (ret == 0)
            {
                this.UnLoad();
                return false;
            }            return true;        }        public void SingleFrameBegin()
        {
            //
            int ret = SendMessage(hCaptureM, 1094, 0, 0);
        }
        public void SingleFrameEnd()
        {
            //
            int ret = SendMessage(hCaptureM, 1095, 0, 0);
        }        public void SingleFrameMode()
        {
            //WM_CAP_GRAB_FRAME
            int ret = SendMessage(hCaptureM, 1084, 0, 0);
            //WM_CAP_SET_PREVIEW 
            //int ret = SendMessage(  hCaptureM, 1074 , 0, 0 );
            //WM_CAP_SINGLE_FRAME
            //ret = SendMessage( hCaptureM, 1096 , 0, 0 );
        }
        public void PreviewMode()
        {
            int ret = SendMessage(hCaptureM, 1074, 1, 0);
        }        public void UnLoad()
        {
            int ret = SendMessage(hCaptureM, 1035, 0, 0);
            CloseHandle(this.hCaptureM);
            isUnLoad = true;
        }        public void CopyToClipBorad()
        {
            int ret = SendMessage(hCaptureM, 1054, 0, 0);
        }        public void ShowFormatDialog()
        {
            int ret = SendMessage(hCaptureM, 1065, 0, 0);
        }
        public void SaveToDIB(string fileName)
        {
            int ret = SendMessage(hCaptureM, 1049, 0, fileName);
        }        public void ShowDisplayDialog()
        {
            int ret = SendMessage(hCaptureM, 1067, 0, 0);
        }        public System.Drawing.Image getCaptureImage()
        {
            System.Windows.Forms.IDataObject iData = System.Windows.Forms.Clipboard.GetDataObject();
            System.Drawing.Image retImage = null;
            if (iData != null)
            {
                if (iData.GetDataPresent(System.Windows.Forms.DataFormats.Bitmap))
                {
                    retImage = (System.Drawing.Image)iData.GetData(System.Windows.Forms.DataFormats.Bitmap);
                }
                else if (iData.GetDataPresent(System.Windows.Forms.DataFormats.Dib))
                {
                    retImage = (System.Drawing.Image)iData.GetData(System.Windows.Forms.DataFormats.Dib);
                }
            }
            return retImage;
        }    }
}
这是我程序 有问题吗

Answer 4

你在调试模式下看的吧
直接运行EXE