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#1 Posted : Sunday, February 5, 2006 8:21:38 PM(UTC)

bkahn  
bkahn

Groups: Registered
Posts: 3


pdf to jpg
  
  Convert pdf file to jpg file and use L_LoadBitmap and L_SaveBitmap.

Target file is  bad and quality is loss.

What do I wrong  ?

============[ DPI problem ]==============

I search forum and find that DPI problem..
But can`t......

 LoadFileOption.XResolution = 96;
 LoadFileOption.YResolution = 96 or 72 or 300 or 400 or 1200  DPI change result same.....

==================================

========= [zip exe file]=================

input and output file attachment

1) double click

2) select target folder

3) bottom-left button

4) you can see....

===================================

///////////////////////////// [ Sample Code ] ///////////////////////////////////////////////////////////

SHORT CL_LeadFilterCtrl::CreateJPG(LPCTSTR Input, LPCTSTR Output)
{
 AFX_MANAGE_STATE(AfxGetStaticModuleState());

 Input="c:\\sample.pdf";
 Output="c:\\";

 //1. Declare the following variables:
 BITMAPHANDLE LeadBitmap = {0};         // LEAD bitmap
 FILEINFO FileInfo = {0};               // File info
 L_INT PageNumber, TotalPages;          // Page numbers
 LOADFILEOPTION LoadFileOption = {0};   // Loading options
 char szOutFileName[MAX_PATH];          // output file name

 //2. Find out the number of pages in the file
 L_FileInfo((L_TCHAR*)Input, &FileInfo, sizeof(FILEINFO), FILEINFO_TOTALPAGES, NULL);
 TotalPages = FileInfo.TotalPages;
 
  
 //3. Loop through the pages of the file
 L_GetDefaultLoadFileOption(&LoadFileOption, sizeof(LOADFILEOPTION));
 LoadFileOption.XResolution = 96;
 LoadFileOption.YResolution = 96; ///// DPI change

 for (PageNumber=1; PageNumber<=TotalPages; ++PageNumber)
 {
 
  //4. Inside the loop, do the following:

  //4.1 Load the next image in the loop
  LoadFileOption.PageNumber = PageNumber;
  L_LoadBitmap((L_TCHAR*)Input, &LeadBitmap, sizeof(BITMAPHANDLE), 24, ORDER_BGRORGRAY, &LoadFileOption, NULL);
  
  //4.2 Check that it's properly loaded and allocated
  if(LeadBitmap.Flags.Allocated)
  {
  //4.3 Save page to a separate file
   wsprintf(szOutFileName, "%sPageNumber%4.4d.jpg",Output, PageNumber);
   L_SaveBitmap(szOutFileName, &LeadBitmap, FILE_JPEG_411, 24, 2, NULL);

  //4.4 Free image from memory
   L_FreeBitmap(&LeadBitmap);
  }
 }
 return SUCCESS;
}

 

oh plz >.<

 

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#2 Posted : Monday, February 6, 2006 7:50:14 PM(UTC)

bkahn  
bkahn

Groups: Registered
Posts: 3


...

winzip 10.0

File Attachment(s):
s.zip (255kb) downloaded 30 time(s).
 
#3 Posted : Tuesday, February 7, 2006 9:59:09 AM(UTC)

Amin  
Amin

Groups: Manager, Tech Support
Posts: 353


To change the loading resolution of PDF files, you need to use the L_SetPDFOptions before loading.

Amin Dodin

Senior Support Engineer
LEAD Technologies, Inc.
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