RightJus.exe Right Justifies Numbers in List Box

ID: Q64078

The information in this article applies to:

Microsoft Windows Software Development Kit (SDK) 3.1

SUMMARY

In versions of Windows earlier than 3.0, it is possible to align columns of information in a list box with spaces, because all characters in the system font are the same width. In Windows 3.0, the system font is proportionally spaced with letters of differing widths, which prevents this technique from being usable.

Tabs can be used to align columns in a list box. The LBS_USETABSTOPS style must be specified when the list box is created. Then, set a tab to correspond with the position of each character of each numeric column. The tabs are specified in dialog units, which are one-fourth of a character width. For example, a three-digit field that should align 12 characters from the left edge of the dialog box can be implemented by setting tabs at positions 40, 44, and 48. This is illustrated below:


    +------------+
    |text     xxx|
    |longer    xx|
              ^^^
              ||+- position 48
              |+-- position 44
              +--- position 40

After determining the text to insert in the list box, convert the spaces to the appropriate number of tabs as the following code fragment demonstrates:


   sprintf(szNumBuffer, "%3d", Number);
   for (i = 0; i < 3; i++)

     if (szNumBuffer[i] == ' ')
        szNumBuffer[i] = '\t';

This code uses the three tabs set above.

There is a file in the Microsoft Software Library named RIGHTJUS that illustrates this convention.

NOTE: This sample is applicable only to Windows 3.1, NOT to Win32.

MORE INFORMATION

The following files are available for download from the Microsoft Download Center. Click the file names below to download the files:

RightJus.exe

For more information about how to download files from the Microsoft Download Center, please visit the Download Center at the following Web address

http://www.microsoft.com/downloads/search.asp

and then click How to use the Microsoft Download Center.

Additional query words:

Keywords : kbfile kbsample kb16bitonly kbCtrl kbListBox kbSDKPlatform kbGrpUser kbUser
Version : WINDOWS:3.1
Platform : WINDOWS
Issue type : kbinfo