天天向上

至Emgu sourceforge下載libemgucv-windows-universal-cuda-2.9.0.1922-beta.exeEmgu官方網頁
預設路徑:C:\Emgu\emgucv-windows-universal-cuda 2.9.0.1922

首先, 新增一個專案名稱“MouseClickAndDraw”設定BackColor 屬性值為 Black color設定DoubleBuffered 為True 加入圖片至Resources

Qt 5.2
我的SONY NB Win7 64 bit選擇 Qt 5.2.0 for Windows 64-bit (VS 2012, 590 MB) (Info)

專案設定Common Language Runtime Support預設值為No Common Language Runtime Support改選擇支援Common Language Runtime(/clr)設定clr完成後編輯程式才會自動出現對應的提示字,否則會不認得namespace System及System::IO

 1: // WriteFileDemo4.cpp : Defines the entry point for the console application.

 2: //

 3:  

 4: #include "stdafx.h"

 5: using namespace System;

 6: using namespace System::IO;

 7:  

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

 9: {

 10: // 寫入檔案

 11: String^ path = "test.txt";

 12: StreamWriter^ sw = File::CreateText(path);

 13: String^ line = "我要寫入4";

 14: sw->WriteLine(line);

 15: sw->Close();

 16:  

 17: // 讀取檔案

 18: StreamReader^ sr = File::OpenText(path);

 19: String^ s = "";

 20: if( s = sr->ReadLine())

 21: {

 22: Console::WriteLine( s );

 23: }

 24: Console::ReadLine();

 25: return 0;

 26: }

CRT(C執行時期函式庫)在編譯前須先設定preprocessor, 加入_CRT_SECURE_NO_WARNINGSCRT安全版: 增加參數驗證, 緩衝區大小檢查, 格式化參數驗證功能寫入fprintf_s讀取fscanf_s

 1: #include "stdafx.h"

 2: #include <cstdio>

 3: #include <iostream>

 4:  

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

 6: {

 7: // 寫入檔案

 8: char msg[] = "我要寫入3";

 9: FILE *fp;

 10: printf_s("寫入檔案:\n%s\r\n", msg);

 11: fopen_s(&fp, "test.txt", "w");

 12: fprintf_s(fp, "%s\n", msg);

 13: fclose(fp);

 14:  

 15: // 讀取檔案

 16: fopen_s(&fp, "test.txt","r");

 17: char line[256];

 18: fscanf_s(fp, "%s", line, 256);

 19: printf_s("讀取檔案: \n%s\r\n", line);

 20: fclose(fp);

 21: system("pause");

 22: return 0;

 23: }

 24:  

利用ofstream寫入檔案, ifstream讀入檔案
很明顯用標準函式庫比上一篇(Windows API WriteFile and ReadFile)使用Windows API語法簡單易懂多了!!!

使用WindowsAPI進行WriteFile 和 ReadFile應用程式  ---> Windows API –—> Windows 作業系統

 1: #include "stdafx.h"

 2: #include <Windows.h>

 3: #include <iostream>

 4:  

 5: using namespace std;

 6:  

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

 8: {

 9: // 寫入檔案

 10: HANDLE hFile;

 11: DWORD nBytes;

 12: hFile = CreateFile( _T("test.txt"), GENERIC_WRITE, FILE_SHARE_WRITE, NULL, CREATE_ALWAYS, 0, NULL);

 13: char msg[] = "我要寫入1";

 14: if( hFile != INVALID_HANDLE_VALUE)

 15: {

 16: WriteFile(hFile, msg, sizeof(msg)-1, &nBytes, NULL);

 17: CloseHandle(hFile);

 18: cout << "寫入內容: " << msg << endl; 

 19: 

 20: cout << "寫入 " << nBytes << " Bytes" << endl;

 21: system("pause");

 22: }

 23: //-------------------------------------------------

 24: // 讀取檔案

 25: hFile = CreateFile( _T("test.txt"), GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_ALWAYS, 0, NULL);

 26: if(hFile != INVALID_HANDLE_VALUE )

 27: {

 28: char line[256] = {0};

 29: BOOL bResult;

 30: bResult = ReadFile(hFile, line, sizeof(line), &nBytes, NULL);

 31: if(nBytes!=0)

 32: {

 33: cout << "讀入內容: " << endl;

 34: cout << line << endl;

 35: }

 36: CloseHandle(hFile);

 37: system("pause");

 38: }

 39: return 0;

 40: }

開啟新專案
專案名稱: VS2012ConsoleOpenCV248

按下<Next>按鈕

工具->選項->文字編輯器->所有語言->勾選<行號>

設定字體

新版OpenCV 2.4.8發行囉!!!
直接Extract到C:\OpenCV-2.4.8\