Legacy ImageMagick Discussions Archive

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compare -metric AE Image1 Image2 info

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Image Image1("Image1");
Image Image2("Image2");
double result;

result=Image1.compare(Image2,AbsoluteErrorMetric); 

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compare -metric AE -fuzz 10% Image1 Image2 info:

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...
BitBlt(memdc, 0, 0, width, height, scrdc, 0, 0 ,SRCCOPY);
HBITMAP handle=(HBITMAP)SelectObject(memdc, membit);
Gdiplus::Bitmap bitmap(handle, NULL);
Magick::Image img;
...

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 #include "stdafx.h"
 #include <windows.h>
 #include <stdio.h>
 #include <iostream>
 #include <fstream>
 #include <gdiplus.h>

 using namespace std;

 #pragma comment(lib, "GdiPlus.lib")
 using namespace Gdiplus; 

 static const GUID png = 
 { 0x557cf406, 0x1a04, 0x11d3, { 0x9a, 0x73, 0x00, 0x00, 0xf8, 0x1e, 0xf3, 0x2e } };


 int main()
 {
     GdiplusStartupInput gdiplusStartupInput;
     ULONG_PTR gdiplusToken;
     GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);

     HDC scrdc, memdc;
     HBITMAP membit;
   
     HWND hWnd = FindWindow(_T("VGA2USB_MainWindow"), NULL);
     scrdc = GetDC(hWnd);
     
     int Height, Width;
     
     RECT rect;
    (GetWindowRect(hWnd,&rect));
	
     int width=rect.right-rect.left;
     int height = rect.bottom - rect.top;
     memdc = CreateCompatibleDC(scrdc);
     membit = CreateCompatibleBitmap(scrdc, width, height);
     SelectObject(memdc, membit);
	 
     BitBlt(memdc, 0, 0, width, height, scrdc, 0, 0, SRCCOPY);
     HBITMAP hBitmap;
     hBitmap =(HBITMAP) SelectObject(memdc, membit);
     Gdiplus::Bitmap bitmap(hBitmap, NULL);
     bitmap.Save(L"C:\screen.jpg", &png);

     DeleteObject(hBitmap);

	 return 0;
 }

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Image screen("screenshot:")
// And if you have multiple monitors:
Image first("screenshot:[0]")
Image second("screenshot:[1]")

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F:\web\im>%IMG689%convert screenshot: r.png

convert.exe: no images defined `r.png' @ error/convert.c/ConvertImageCommand/3161.