关于C#程序代码解释请帮我逐句解释

显示全部楼层 · 2010-5-23 14:27:58

class ShowVideo

{

//ShowVideocalls

[DllImport("avicap32.dll")]

public static extern IntPtr capCreateCaptureWindowA(byte[] lpszWindowName, int dwStyle, int x, int y, int nWidth, int nHeight, IntPtr hWndParent, int nID);

[DllImport("avicap32.dll")]

public static extern bool capGetDriverDescriptionA(short wDriver, byte[] lpszName, int cbName, byte[] lpszVer, int cbVer);
public const int WM_USER = 0x400;

public const int WS_CHILD = 0x40000000;

public const int WS_VISIBLE = 0x10000000;

public const int SWP_NOMOVE = 0x2;

public const int SWP_NOZORDER = 0x4;
[StructLayout(LayoutKind.Sequential)]

public struct VIDEOHDR

{

[MarshalAs(UnmanagedType.I4)]

public int lpData;

[MarshalAs(UnmanagedType.I4)]

public int dwBufferLength;
是视频的调用代码
那顺便说下是干什么用的

千问 · 2010-5-23 14:27:58

class ShowVideo//定义一个类
{
//ShowVideocalls
[DllImport("avicap32.dll")]
public static extern IntPtr capCreateCaptureWindowA(byte[] lpszWindowName, int dwStyle, int x, int y, int nWidth, int nHeight, IntPtr hWndParent, int nID);//定义变量
[DllImport("avicap32.dll")]
public static ex

千问 · 2010-5-23 14:27:58

是调用系统API，这段代码没有实际意义