C生成曲线BMP

C生成曲线BMP| Id | Title | DateAdded | SourceUrl | PostType | Body | BlogId | Description | DateUpdated | IsMarkdown | EntryName | CreatedTime | IsActive | AutoDesc | AccessPermission |

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| 16937991| C生成曲线BMP| 2022-11-30T11:53:00| | BlogPost|

 C生成曲线BMP

 

http://zhidao.baidu.com/question/222913503.html

 

 

屏幕截屏

http://topic.csdn.net/u/20120822/13/e52e7b2a-e151-4985-9aa7-934d9f38c8de.html

 

#include "stdafx.h"

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <math.h>

#include<Windows.h>

typedef unsigned char  BYTE;

typedef unsigned short WORD;

typedef unsigned long  DWORD;

typedef long                  LONG;

 

#pragma pack (2)

 

 

 

 

int SaveBitmapToFile(BITMAP *bitmap, LPCWSTR lpFileName,char *lpBuf) {

   DWORD dwWritten;

   BITMAPFILEHEADER   bmfHdr;

   BITMAPINFOHEADER   bi;

   HANDLE          fh=NULL;

   bi.biSize = sizeof(BITMAPINFOHEADER);

   bi.biWidth= bitmap->bmWidth;

   bi.biHeight = bitmap->bmHeight;

   bi.biPlanes = 1;

   bi.biBitCount      = bitmap->bmBitsPixel*8;

   bi.biCompression   = BI_RGB;

   bi.biSizeImage     = 0;

   bi.biXPelsPerMeter = 0;

   bi.biYPelsPerMeter = 0;

   bi.biClrUsed       = 0;

   bi.biClrImportant  = 0;

   fh = CreateFile(lpFileName, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL | FILE_FLAG_SEQUENTIAL_SCAN, NULL);

   if (fh == INVALID_HANDLE_VALUE) return FALSE;

   bmfHdr.bfType = 0x4D42; // "BM"

   bmfHdr.bfSize = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER)+bitmap->bmWidth*bitmap->bmHeight*bitmap->bmBitsPixel;

   bmfHdr.bfReserved1 = 0;

   bmfHdr.bfReserved2 = 0;

   bmfHdr.bfOffBits = (DWORD) sizeof(BITMAPFILEHEADER) + (DWORD)sizeof(BITMAPINFOHEADER);

   WriteFile(fh, (LPSTR)&bmfHdr, sizeof(BITMAPFILEHEADER), &dwWritten, NULL);

   WriteFile(fh, ( char *)&bi,sizeof (BITMAPINFOHEADER), &dwWritten, NULL);

   WriteFile(fh, ( char *)lpBuf,bitmap->bmWidth*bitmap->bmHeight*bitmap->bmBitsPixel, &dwWritten, NULL);

   FlushFileBuffers(fh);

   CloseHandle(fh);

   return true;

}

 

 

int GetBitmapFromScreen(LPCWSTR lpFileName) {

    char *lpBuf;

    HBITMAP hBitmap,hOld ;

    HDC hDC,hcDC;

    BITMAP bb;

    BITMAPINFO b;

    HANDLE hp,fh=NULL;

    DWORD dwX,dwY;

 

    dwX=GetSystemMetrics(SM_CXSCREEN);

    dwY=GetSystemMetrics(SM_CYSCREEN);

    hDC=GetDC(NULL);

    hcDC=CreateCompatibleDC(hDC);

    hBitmap=CreateCompatibleBitmap(hDC,dwX,dwY);

    hOld=(HBITMAP)SelectObject(hcDC,hBitmap);

    BitBlt(hcDC,0, 0,dwX,dwY, hDC, 0, 0, SRCCOPY);

    bb.bmWidth=dwX;

    bb.bmHeight =dwY;

    bb.bmPlanes = 1;

    bb.bmWidthBytes=bb.bmWidth*3;

    bb.bmBitsPixel=3;

    bb.bmType=0;

    b.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);

    b.bmiHeader.biWidth        =dwX;

    b.bmiHeader.biHeight       =dwY;

    b.bmiHeader.biPlanes       =1;

    b.bmiHeader.biBitCount     =3*8;

    b.bmiHeader.biCompression  =BI_RGB;

    b.bmiHeader.biSizeImage    =0;

    b.bmiHeader.biXPelsPerMeter=0;

    b.bmiHeader.biYPelsPerMeter=0;

    b.bmiHeader.biClrUsed      =0;

    b.bmiHeader.biClrImportant =0;

    b.bmiColors[0].rgbBlue     =8;

    b.bmiColors[0].rgbGreen    =8;

    b.bmiColors[0].rgbRed      =8;

    b.bmiColors[0].rgbReserved =0;

    hp=GetProcessHeap();

    lpBuf=( char *)HeapAlloc(hp,HEAP_ZERO_MEMORY,bb.bmHeight*bb.bmWidth*4);

    GetDIBits(hcDC,hBitmap,0,dwY,lpBuf,&b,DIB_RGB_COLORS);

    SaveBitmapToFile(&bb,lpFileName,lpBuf);

    ReleaseDC(NULL,hDC);

    DeleteDC(hcDC);

    DeleteObject(hBitmap);

    DeleteObject(hOld);

    HeapFree(hp,0,lpBuf);

    return true;

}

 

 

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

{

            LPCWSTR path = L "E:\\e.bmp";

             GetBitmapFromScreen(path);

 

             return 0;

}

  

| 648658| | 2022-11-30T11:53:00| false| | 2022-11-30T11:52:38.89| true| C生成曲线BMP http://zhidao.baidu.com/question/222913503.html 屏幕截屏 http://topic.csdn.net/u/20120822/13/e52e7b2a-e151-4985-9aa7-934d9f38c8de.html #include "| Anonymous|