As the following illustration shows, displaying text vertically doesn’t mean that you simply rotate an entire line of text by 90 degrees. Most characters remain upright, but others, such as those identified by arrows, change orientation.

Fortunately, with Win32 you don’t need to write code to rotate characters. To display text vertically on Windows, enumerate the available fonts as usual and select a font whose typeface name begins with the at (@) character. Then create a LOGFONT structure, setting both the escapement and the orientation to 270 degrees. Calls to TextOut are the same as for horizontal text.

The Far East Win32 SDK contains a sample application called TATE (short for tategaki, meaning “vertical writing”) which demonstrates how to create fonts and display vertical text. Figure 7-22 shows a sample file displayed in TATE using a horizontal font. Selecting a vertical font from the Font dialog box (see Figure 7-23 below) causes the text to be displayed vertically. (See Figure 7-24 below.)

As a result all LMD controls like TLMDFontComboBox, which allow to display or select a font, support now an option to hide such font names when they are of no or little use for your end customers.

So how can a programmer use described features? Possibilities are endless:

1. Download a filelist and get a specified file from zip file only
2. Multi-threaded file downloads
3. Allow end-users to pause/resume downloads of large files

Here is simple code to implement first example (downloading a specified file from zip):

  LMDWebHTTPGet1.URL := 'http://www.lmd.de/downloads/lmd2010vcl/setupse10d14.zip';
  // "end of central directory" size.
  // Minus shows that we read it from end of file
  LMDWebHTTPGet1.RangeEnd := -17;
  // Downloads last 17 bytes of file
  if LMDWebHTTPGet1.Process(False, False) then
  begin
    LEndOfCentralRecord.LoadFromStream(LMDWebHTTPGet1.Data);
    // Fills RangeStart by "Central Directory" structure begin offset
    LMDWebHTTPGet1.RangeStart := LEndOfCentralRecord.OffsetOfCentralDirectory;
    LMDWebHTTPGet1.RangeEnd := LMDWeHTTPGet1.RangeStart + LEndOfCentralRecord.SizeOfCentralDirectory;
    // Downloads "Central Directory" structure
    if LMDWebHTTPGet1.Process(False, False) then
    begin
      LCentralDirectory.LoadFromStream(LMDWebHTTPGet1.Data);
      // Fills RangeStart by offset of compressed file in ZIP
      LMDWebHTTPGet1.RangeStart := LCentralDirectory.Files['readme.txt'].FileOffset;
      // Compressed size
      LMDWebHTTPGet1.RangeEnd := LMDWebHTTPGet1.RangeStart + LCentralDirectory.Files['readme.txt'].CompressedSize;
      // Downloads compressed file "readme.txt"
      if LMDWebHTTPGet1.Process(False, False) then
      begin
        // Processing of compressed file
      end;
    end;
  end;

LEndOfCentralRecord, LCentralDirectory are placeholders that schematically shows corresponding zip format structures – “Central directory structure” and “End of central directory record”. The full specification is described here.

Besides that WebPack includes a demo project in demos\lmdweb\LMDWebHTTPGetResume folder.