视频

#include "windows.h"
#include <rs232.h>
//自定义头文件
#include "avicap32.h"
#include <cvirte.h>
#include <userint.h>
#include "cam.h"
//设置所需要摄像头的常量
#define WM_CAP_START WM_USER //开始#define WM_CAP_STOP WM_CAP_START + 68 //停止
#define WM_CAP_DRIVER_CONNECT WM_CAP_START + 10 //连接#define WM_CAP_DRIVER_DISCONNECT WM_CAP_START + 11 //断开
#define WM_CAP_SET_PREVIEW WM_CAP_START + 50
#define WM_CAP_SET_PREVIEWRA TE WM_CAP_START+ 52
//定义面板句柄
static int handle;
//定义摄像头句柄
static int result;
static int panelHandle;
static void *callbackdata;
void CVICALLBACK Data_receive(int COMport,int eventMask,void *callbackdata);
int main (int argc, char *argv[])
{
if (InitCVIRTE (0, argv, 0) == 0)
return -1; /* out of memory */
if ((panelHandle = LoadPanel (0, "CAM.UIR", PANEL)) < 0)
return -1;
//打开并配置串口
OpenComConfig (1, "", 9600, 0, 8, 1, 0, 0);
DisplayPanel (panelHandle);
RunUserInterface ();
DiscardPanel (panelHandle);
return 0;
}
//退出按钮
int CVICALLBACK QuitCallback (int panel, int control, int event,
void *callbackData, int eventData1, int eventData2)
{
switch (event)
{
case EVENT_COMMIT:
CloseCom(1);
QuitUserInterface (0);
break;
}
return 0;
}
//开始按钮
int CVICALLBACK startCB (int panel, int control, int event,
void *callbackData, int eventData1, int eventData2)
{
int width;
int height;
int top;
int left;
switch (event)
{
case EVENT_COMMIT:
SetCtrlVal (panelHandle, PANEL_LED,1);
SetCtrlAttribute (panelHandle, PANEL_LED, A TTR_LABEL_TEXT, "倒车");
//获得面板句柄
GetPanelAttribute (panelHandle, ATTR_SYSTEM_WINDOW_HANDLE, &handle);
//获得屏幕中图像要显示的位置
GetCtrlAttribute (panelHandle, PANEL_CANV AS_TV, A TTR_LEFT, &left);
GetCtrlAttribute (panelHandle, PANEL_CANV AS_TV, A TTR_TOP, &top);
GetCtrlAttribute (panelHandle, PANEL_CANV AS_TV, A TTR_HEIGHT, &height);
GetCtrlAttribute (panelHandle, PANEL_CANV AS_TV, A TTR_WIDTH, &width);
//打开摄像头
result = capCreateCaptureWindowA("",WS_CHILD |
WS_VISIBLE ,left,top,width,height,handle,0);
//设置摄像头函数
SendMessage((HWND)result, WM_CAP_DRIVER_CONNECT, 0, 0);
SendMessage((HWND)result, WM_CAP_SET_PREVIEWRATE, 66, 0);
SendMessage((HWND)result, WM_CAP_SET_PREVIEW, 1, 0);
break;
}
return 0;
}
int CVICALLBACK rs232receive (int panel, int control, int event,
void *callbackData, int eventData1, int eventData2)
{ char a[1]={1};
switch (event)
{
case EVENT_COMMIT:
FlushInQ(1);//清空串行口1的输入队列
FlushOutQ(1);//清空串行口1的输出队列
//为串口1设置回调函数（当PC机串口收到字符串后调用函数Data_receive)
InstallComCallback(1,LWRS_RECEIVE,3,0,Data_receive,callbackdata);
ComWrt(1,a,1);
break;
}
return 0;
}
void CVICALLBACK Data_receive(int COMport,int eventMask,void *callbackdata)
{ int count;
char rbuf[3];
//读取指定端口入队列字符数
count=GetInQLen(1);
if(count==3)
{ComRd(1,rbuf,count);
SetCtrlVal( panelHandle,PANEL_NUMERIC,rbuf[0]);
SetCtrlVal( panelHandle,PANEL_NUMERIC_2,rbuf[1]);
SetCtrlVal( panelHandle,PANEL_NUMERIC_3,rbuf[2]);
}
}。