摄像头应用.doc

摄像头应用.doc前段时间刚做了个监控系统,有不明白+;;;usingSystem;namespaceCamTest2{///<summary>///一个控制摄像头的类///</summary>lassPick{privateconstintWM_USER=0x400;privateconstintWS_CHILD=0x40000000;privateconstintWS_VISIBLE=0x10000000;privateconstintWM_CAP_START=WM_USER;privateconstintWM_CAP_STOP=WM_CAP_START+68;privateconstintWM_CAP_DRIVER_CONNECT=WM_CAP_START+10;privateconstintWM_CAP_DRIVER_DISCONNECT=WM_CAP_START+11;privateconstintWM_CAP_SAVEDIB=WM_CAP_START+25;privateconstintWM_CAP_GRAB_FRAME=WM_CAP_START+60;privateconstintWM_CAP_SEQUENCE=WM_CAP_START+62;privateconstintWM_CAP_FILE_SET_CAPTURE_FILEA=WM_CAP_START+20;privateconstintWM_CAP_SEQUENCE_NOFILE=WM_CAP_START+63;privateconstintWM_CAP_SET_OVERLAY=WM_CAP_START+51;privateconstintWM_CAP_SET_PREVIEW=WM_CAP_START+50;privateconstintWM_CAP_SET_CALLBACK_VIDEOSTREAM=WM_CAP_START+6;privateconstintWM_CAP_SET_CALLBACK_ERROR=WM_CAP_START+2;privateconstintWM_CAP_SET_CALLBACK_STATUSA=WM_CAP_START+3;privateconstintWM_CAP_SET_CALLBACK_FRAME=WM_CAP_START+5;privateconstintWM_CAP_SET_SCALE=WM_CAP_START+53;privateconstintWM_CAP_SET_PREVIEWRATE=WM_CAP_START+52;privateconstintWM_CAP_DLG_VIDEOFORMAT=WM_CAP_START+41;privateconstintWM_CAP_DLG_VIDEOSOURCE=WM_CAP_START+42;privateconstintWM_CAP_DLG_VIDEODISPLAY=WM_CAP_START+43;PRESSION=WM_CAP_START+46;privateIntPtrhWndC;privateboolbStat=false;pr