選擇一個VS項目類型（C++）

我並沒有多使用C++（我試圖堅持像Java和VB.NET這樣簡單的東西），但最近我沒有選擇。當我在VS中選擇項目類型時，我下載了一些C++源代碼，應該選擇哪種項目類型？我剛剛使用Win32控制檯應用程序，但是我只是下載了一些代碼（下文），即使編譯出錯時也不能正常工作。我試圖使用CLR控制檯應用程序和一個空的項目，並且一直在改變許多變量，但我無法獲得這個代碼的工作。我注意到這個代碼在開始時並沒有「int main()」，這是否與它有關？不管怎麼說，這裏是代碼，得到它從here：選擇一個VS項目類型（C++）

/* Demo of modified Lucas-Kanade optical flow algorithm. 
    See the printf below */ 

#ifdef _CH_ 
#pragma package <opencv> 
#endif 

#ifndef _EiC 
#include "cv.h" 
#include "highgui.h" 
#include <stdio.h> 
#include <ctype.h> 
#endif 

#include <windows.h> 

#define FULL_IMAGE_AS_OUTPUT_FILE 


#define cvMirror cvFlip 

//IplImage *image = 0, *grey = 0, *prev_grey = 0, *pyramid = 0, *prev_pyramid = 0, *swap_temp; 
IplImage **buf = 0; 
IplImage *image1 = 0; 
IplImage *imageCopy=0; 

IplImage *image = 0; 
int win_size = 10; 
const int MAX_COUNT = 500; 
CvPoint2D32f* points[2] = {0,0}, *swap_points; 
char* status = 0; 
//int count = 0; 
//int need_to_init = 0; 
//int night_mode = 0; 
int flags = 0; 
//int add_remove_pt = 0; 
bool bLButtonDown = false; 
//bool bstopLoop = false; 
CvPoint pt, pt1,pt2; 
//IplImage* img1; 
FILE* FileDest; 

char* strImageDir = "E:\\Projects\\TSCreator\\Images"; 
char* strItemName = "b"; 
int imageCount=0; 
int bFirstFace = 1;  // flag for first face 
int mode = 1; // Mode 1 - Haar Traing Sample Creation, 2 - HMM sample creation, Mode = 3 - Both Harr and HMM. 
//int startImgeNo = 1; 
bool isEqualRation = false; //Weidth to height ratio is equal 

//Selected Image data 
IplImage *selectedImage = 0; 
int selectedX = 0, selectedY = 0, currentImageNo = 0, selectedWidth = 0, selectedHeight= 0; 
CvRect selectedROI; 


void saveFroHarrTraining(IplImage *src, int x, int y, int width, int height, int imageCount); 
void saveForHMMTraining(IplImage *src, CvRect roi,int imageCount); 

// Code for draw ROI Cropping Image 
void on_mouse(int event, int x, int y, int flags, void* param) 
{ 

char f[200]; 
CvRect reg; 

     if(!image) 
      return; 

    if(event == CV_EVENT_LBUTTONDOWN) 
    { 
     bLButtonDown = true; 

     pt1.x = x; 
     pt1.y = y; 

    } 
    else if (event == CV_EVENT_MOUSEMOVE) //Draw the selected area rectangle 
    { 
     pt2.x = x; 
     pt2.y = y; 

     if(bLButtonDown) 
     { 
      if(!image1) 
     { 
      /* allocate all the buffers */ 
      image1 = cvCreateImage(cvGetSize(image), 8, 3); 
      image1->origin = image->origin; 
      points[0] = (CvPoint2D32f*)cvAlloc(MAX_COUNT*sizeof(points[0][0])); 
      points[1] = (CvPoint2D32f*)cvAlloc(MAX_COUNT*sizeof(points[0][0])); 
      status = (char*)cvAlloc(MAX_COUNT); 
      flags = 0; 
     } 

     cvCopy(image, image1, 0);  

     //Equal Weight-Height Ratio 
      if(isEqualRation) 
      { 
       pt2.y = pt1.y + (pt2.x-pt1.x); 
      } 

      //Max Height and Width is the image width and height 
      if(pt2.x>image->width) 
      { 
       pt2.x = image->width; 
      } 
      if(pt2.y>image->height) 
      { 
       pt2.y = image->height; 
      } 

      CvPoint InnerPt1 = pt1; 
      CvPoint InnerPt2 = pt2; 

      if (InnerPt1.x > InnerPt2.x) 
      { 
       int tempX = InnerPt1.x; 
       InnerPt1.x = InnerPt2.x; 
       InnerPt2.x = tempX; 
      } 

      if (pt2.y < InnerPt1.y) 
      { 
       int tempY = InnerPt1.y; 
       InnerPt1.y = InnerPt2.y; 
       InnerPt2.y = tempY; 

      } 

      InnerPt1.y = image->height - InnerPt1.y; 
      InnerPt2.y = image->height - InnerPt2.y;  




      CvFont font; 
      double hScale=1.0; 
      double vScale=1.0; 
      int lineWidth=1; 
      cvInitFont(&font,CV_FONT_HERSHEY_SIMPLEX|CV_FONT_ITALIC, hScale,vScale,0,lineWidth); 

      char size [200]; 
      reg.x = pt1.x; 
      reg.y = image->height - pt2.y; 
      reg.height = abs (pt2.y - pt1.y); 
      reg.width = InnerPt2.x -InnerPt1.x; 
      //print width and heght of the selected reagion 
      sprintf(size, "(%dx%d)",reg.width, reg.height); 
      cvPutText (image1,size,cvPoint(10,10), &font, cvScalar(255,255,0)); 
      cvRectangle(image1, InnerPt1, InnerPt2, CV_RGB(255,0,0), 1); 

      //Mark Selected Reagion 
      selectedImage = image; 
      selectedX = pt1.x; 
      selectedY = pt1.y; 
      selectedWidth = reg.width; 
      selectedHeight = reg.height; 
      selectedROI = reg; 

      //Show the modified image 
      cvShowImage("HMM-Harr Positive Image Creator",image1); 
     } 

    } 
    else if (event == CV_EVENT_LBUTTONUP) 
    { 
     bLButtonDown = false; 

//  pt2.x = x; 
//  pt2.y = y; 
// 
//  if (pt1.x > pt2.x) 
//  { 
//   int tempX = pt1.x; 
//   pt1.x = pt2.x; 
//   pt2.x = tempX; 
//  } 
// 
//  if (pt2.y < pt1.y) 
//  { 
//   int tempY = pt1.y; 
//   pt1.y = pt2.y; 
//   pt2.y = tempY; 
// 
//  } 
// 
//reg.x = pt1.x; 
//reg.y = image->height - pt2.y; 
// 
//reg.height = abs (pt2.y - pt1.y); 
////reg.width = reg.height/3; 
//reg.width = pt2.x -pt1.x; 
////reg.height = (2 * reg.width)/3; 



#ifdef FULL_IMAGE_AS_OUTPUT_FILE 
     CvRect FullImageRect; 
     FullImageRect.x = 0; 
     FullImageRect.y = 0; 
     FullImageRect.width = image->width; 
     FullImageRect.height = image->height; 

     IplImage *regionFullImage =0; 
     regionFullImage = cvCreateImage(cvSize (FullImageRect.width, FullImageRect.height), 
            image->depth, image->nChannels); 

     image->roi = NULL; 

     //cvSetImageROI (image, FullImageRect); 
     //cvCopy (image, regionFullImage, 0); 

#else 
     IplImage *region =0; 
     region = cvCreateImage(cvSize (reg.width, reg.height),    
           image1->depth, image1->nChannels); 

     image->roi = NULL; 
     cvSetImageROI (image1, reg); 

     cvCopy (image1, region, 0); 
#endif 
     //cvNamedWindow("Result", CV_WINDOW_AUTOSIZE); 

     //selectedImage = image; 
     //selectedX = pt1.x; 
     //selectedY = pt1.y; 
     //selectedWidth = reg.width; 
     //selectedHeight = reg.height; 
     ////currentImageNo = startImgeNo; 
     //selectedROI = reg; 

     /*if(mode == 1) 
     { 
      saveFroHarrTraining(image,pt1.x,pt1.y,reg.width,reg.height,startImgeNo); 
     } 
     else if(mode == 2) 
     { 
      saveForHMMTraining(image,reg,startImgeNo); 
     } 
     else if(mode ==3) 
     { 
      saveFroHarrTraining(image,pt1.x,pt1.y,reg.width,reg.height,startImgeNo); 
      saveForHMMTraining(image,reg,startImgeNo); 
     } 
     else 
     { 
      printf("Invalid mode."); 
     } 


     startImgeNo++;*/ 

    } 
} 

/* 
Save popsitive samples for Harr Training. 
Also add an entry to the PositiveSample.txt with the location of the item of interest. 
*/ 
void saveFroHarrTraining(IplImage *src, int x, int y, int width, int height, int imageCount) 
{ 
    char f[255] ; 
     sprintf(f,"%s\\%s\\harr_%s%d%d.jpg",strImageDir,strItemName,strItemName,imageCount/10, imageCount%10); 

     cvNamedWindow("Harr", CV_WINDOW_AUTOSIZE); 
     cvShowImage("Harr", src); 
     cvSaveImage(f, src); 


     printf("output%d%d \t ", imageCount/10, imageCount%10); 
     printf("width %d \t", width); 
     printf("height %d \t", height); 
     printf("x1 %d \t", x); 
     printf("y1 %d \t\n", y); 

     char f1[255]; 
     sprintf(f1,"%s\\PositiveSample.txt",strImageDir); 
     FileDest = fopen(f1, "a"); 
     fprintf(FileDest, "%s\\harr_%s%d.jpg 1 %d %d %d %d \n",strItemName,strItemName, imageCount, x, y, width, height); 
     fclose(FileDest); 
} 

/* 
Create Sample Images for HMM recognition algorythm trai ning. 
*/ 
void saveForHMMTraining(IplImage *src, CvRect roi,int imageCount) 
{ 
    char f[255] ; 
    printf("x=%d, y=%d, w= %d, h= %d\n",roi.x,roi.y,roi.width,roi.height); 
    //Create the file name 
    sprintf(f,"%s\\%s\\hmm_%s%d.pgm",strImageDir,strItemName,strItemName, imageCount); 

    //Create storage for grayscale image 
    IplImage* gray = cvCreateImage(cvSize(roi.width,roi.height), 8, 1); 
    //Create storage for croped reagon 
    IplImage* regionFullImage = cvCreateImage(cvSize(roi.width,roi.height),8,3); 
    //Croped marked region 
    cvSetImageROI(src,roi); 
    cvCopy(src,regionFullImage); 
    cvResetImageROI(src); 
    //Flip croped image - otherwise it will saved upside down 
    cvConvertImage(regionFullImage, regionFullImage, CV_CVTIMG_FLIP); 
    //Convert croped image to gray scale 
    cvCvtColor(regionFullImage,gray, CV_BGR2GRAY); 
    //Show final grayscale image 
    cvNamedWindow("HMM", CV_WINDOW_AUTOSIZE); 
    cvShowImage("HMM", gray); 
    //Save final grayscale image 
    cvSaveImage(f, gray); 
} 

int maina(int argc, char** argv) 
{ 
    CvCapture* capture = 0; 
    //if(argc == 1 || (argc == 2 && strlen(argv[1]) == 1 && isdigit(argv[1][0]))) 
    // capture = cvCaptureFromCAM(argc == 2 ? argv[1][0] - '0' : 0); 
    //else if(argc == 2) 
    // capture = cvCaptureFromAVI(argv[1]); 

    char* video; 

    if(argc ==7) 
    { 
     mode = atoi(argv[1]); 
     strImageDir = argv[2]; 
     strItemName = argv[3]; 
     video = argv[4]; 
     currentImageNo = atoi(argv[5]); 
     int a = atoi(argv[6]); 
     if(a==1) 
     { 
      isEqualRation = true; 
     } 
     else 
     { 
      isEqualRation = false; 
     } 

    } 
    else 
    { 
     printf("\nUsage: TSCreator.exe <Mode> <Sample Image Save Path> <Sample Image Save Directory> <Video File Location> <Start Image No> <Is Equal Ratio>\n"); 
     printf("Mode = 1 - Haar Traing Sample Creation. \nMode = 2 - HMM sample creation.\nMode = 3 - Both Harr and HMM\n"); 
     printf("Is Equal Ratio = 0 or 1. 1 - Equal weidth and height, 0 - custom."); 
     printf("Note: You have to create the image save directory in correct path first.\n"); 
     printf("Eg: TSCreator.exe 1 E:\Projects\TSCreator\Images A 11.avi 1 1\n\n"); 
     return 0; 
    } 
     capture = cvCaptureFromAVI(video); 

    if(!capture) 
    { 
     fprintf(stderr,"Could not initialize capturing...\n"); 
     return -1; 
    } 

    cvNamedWindow("HMM-Harr Positive Image Creator", CV_WINDOW_AUTOSIZE); 
    cvSetMouseCallback("HMM-Harr Positive Image Creator", on_mouse, 0); 
    //cvShowImage("Test", image1); 

    for(;;) 
    { 
     IplImage* frame = 0; 
     int i, k, c; 

     frame = cvQueryFrame(capture); 
     if(!frame) 
      break; 

     if(!image) 
     { 
      /* allocate all the buffers */ 
      image = cvCreateImage(cvGetSize(frame), 8, 3); 
      image->origin = frame->origin; 
      //grey = cvCreateImage(cvGetSize(frame), 8, 1); 
      //prev_grey = cvCreateImage(cvGetSize(frame), 8, 1); 
      //pyramid = cvCreateImage(cvGetSize(frame), 8, 1); 
      // prev_pyramid = cvCreateImage(cvGetSize(frame), 8, 1); 
      points[0] = (CvPoint2D32f*)cvAlloc(MAX_COUNT*sizeof(points[0][0])); 
      points[1] = (CvPoint2D32f*)cvAlloc(MAX_COUNT*sizeof(points[0][0])); 
      status = (char*)cvAlloc(MAX_COUNT); 
      flags = 0; 
     } 

     cvCopy(frame, image, 0); 
     // cvCvtColor(image, grey, CV_BGR2GRAY); 


     cvShowImage("HMM-Harr Positive Image Creator", image); 
     cvSetMouseCallback("HMM-Harr Positive Image Creator", on_mouse, 0); 
     c = cvWaitKey(0); 
     if((char)c == 's') 
     { 
      //Save selected reagion as training data 
      if(selectedImage) 
      { 
       printf("Selected Reagion Saved\n"); 
       if(mode == 1) 
       { 
        saveFroHarrTraining(selectedImage,selectedX,selectedY,selectedWidth,selectedHeight,currentImageNo); 
       } 
       else if(mode == 2) 
       { 
        saveForHMMTraining(selectedImage,selectedROI,currentImageNo); 
       } 
       else if(mode ==3) 
       { 
        saveFroHarrTraining(selectedImage,selectedX,selectedY,selectedWidth,selectedHeight,currentImageNo); 
        saveForHMMTraining(selectedImage,selectedROI,currentImageNo); 
       } 
       else 
       { 
        printf("Invalid mode."); 
       } 
       currentImageNo++; 
      }  

     } 

    } 

    cvReleaseCapture(&capture); 
    //cvDestroyWindow("HMM-Harr Positive Image Creator"); 
    cvDestroyAllWindows(); 

    return 0; 
} 

#ifdef _EiC 
main(1,"lkdemo.c"); 
#endif

如果我把...

#include "stdafx.h" 


int _tmain(int argc, _TCHAR* argv[]) 
{ 
    return 0; 
}

...前面的代碼之前（並鏈接到正確的OpenCV的.lib文件）編譯沒有錯誤，但在命令行中不做任何事情。 如何讓它工作？

來源

2010-03-25 ubiquibacon

嘗試使用新建項目 - > Visual C++ - > Win32 - > Win32控制檯應用程序。您可以採取所有的默認設置，爲該項目獲取一個新的.cpp文件，該文件將包含_tmain。修改_tmain這樣的：

int maina(int argc, char** argv); // add this 

int _tmain(int argc, _TCHAR* argv[]) 
{ 
    return maina(argc, argv); // call maina from here 
}

，然後設置項目屬性 - >配置屬性 - >常規 - >字符從「使用Unicode字符集」到「使用多字節字符集」的默認設置。（在你改變這個之前，你會在將_TCHAR * []作爲char **傳遞時出現編譯器錯誤。）

然後，只需將源文件添加到未修改的項目中，並查看是否可以獲取它編譯和鏈接。然後在沒有任何參數的情況下從控制檯窗口運行它，查看是否獲得了值爲「Usage：...」的五個打印輸出。

（正如我重新閱讀你的問題，我看你是使用 Win32控制檯應用程序，所以在這種情況下，它可能只是對Unicode的是給你的麻煩多字節字符集。）

（以新項目的默認值，你還需要選擇已添加的現有源文件，進入屬性 - >配置屬性 - > C/C++ - >預編譯頭 - >創建/使用預編譯頭並將其設置爲不使用預編譯頭。）

來源

2010-03-25 06:53:42

你先生是男人。只是一個註釋，但它與沒有預編譯頭文件。由於我是C++ noob（和一般的編程noob），你能向我解釋幾件事嗎？ 1.）如何知道何時更改字符集，預編譯頭文件，公共語言運行時支持等？ 2.）Win32與CLR，有什麼區別，我應該默認選擇哪一個？ 3。）您是否認爲開發我發佈的源代碼的人打算爲某人做必須這樣做？我會假設這樣的代碼將張貼SSCCE風格...再次感謝！ – ubiquibacon 2010-03-25 07:13:17

使用多字節只是一個猜測。如果您看到wchar_t而不是char，則可能使用Unicode。 Google「_MBCS _UNICODE」可以找到很多相關信息。你永遠不需要預編譯頭文件來讓它工作 - 它們只是爲了加速編譯。我想不出一個示例場景，但它們可能會不同步 - 如有疑問，請重新構建整個項目以重新生成它們。只有當C++使用.NET，AFAIK時，您才需要CLR。在這種情況下，C++/CLI語法應該很突出，例如字符串^ myString。 – 2010-03-25 07:44:08

當您的C++應用程序啓動時，它會搜索

int main(int argc, char** argv)

功能。但是，在Windows中，這可以採取以下形式：

int _tmain(int argc, _TCHAR* argv[])

您可以放心地假設兩者是等同的，只是寫法不同。當應用程序啓動時，它加載你的_tmain，然後返回0，所以你看不到任何輸出，這是正常的。

你需要的是將int maina（...）重命名爲int _tmain（...）

來源

2010-03-25 07:07:58 Eric

選擇一個VS項目類型（C++）

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