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Q260237: Visual FoxPro 6.0 Sample: Using a PictureClip Control

Article: Q260237
Product(s): Microsoft FoxPro
Version(s): WINDOWS:5.0,5.0a,6.0
Operating System(s): 
Keyword(s): kbfile kbsample kbActiveX kbCtrl kbvfp500 kbvfp500a kbvfp600 kbGrpDSFox kbDSupport
Last Modified: 11-NOV-2000

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The information in this article applies to:

- Microsoft Visual FoxPro for Windows, versions 5.0, 5.0a, 6.0 
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SUMMARY
=======

PicClip.exe is a sample that demonstrates how to use an ActiveX PictureClip
control to select an area from a source bitmap and display the image in an
ActiveX FoxHWND control (FoxHWND.ocx). By using the PictureClip control
(PicClp32.ocx), the user can select a specific area from a source bitmap as an
object that can then be passed to another control that is capable of accepting
an object reference.

MORE INFORMATION
================

The following file is available for download from the Microsoft Download
Center:

  PicClip.exe
  (http://download.microsoft.com/download/vfox60/sample3/6/win98/en-us/PicClip.exe)

Release Date: May-24-2000

For additional information about how to download Microsoft Support files, click
the article number below to view the article in the Microsoft Knowledge Base:

  Q119591 How to Obtain Microsoft Support Files from Online Services

Microsoft used the most current virus detection software available on the date of
posting to scan this file for viruses. Once posted, the file is housed on secure
servers that prevent any unauthorized changes to the file.

The PictureClip control provides an efficient mechanism for storing multiple
picture resources in a single bitmap file. Instead of using multiple bitmaps or
icons, you need to create a source bitmap that contains all of the bitmap images
that are required by your application. When you need to display an individual
bitmap, use the PictureClip control to select the region in the source bitmap
that contains the portion of the bitmap that you need.

You can specify the clipping region in the source bitmap in one of two ways:

- Select any portion of the source bitmap as the clipping region. Specify the
  upper-left corner of the clipping region by using the ClipX and ClipY
  properties. Specify the area of the clipping region by using the ClipHeight
  and ClipWidth properties. This method is useful when you want to view a
  random portion of a bitmap.

- Divide the source bitmap into a specified number of rows and columns. The
  result is a uniform matrix of picture cells numbered 0, 1, 2, and so on. You
  can then display individual cells by using the GraphicCell property. This
  method is useful when the source bitmap contains a palette of icons that you
  want to display individually, such as in a toolbar bitmap.

Because the PictureClip control returns an object rather than a Bitmap, an image
control cannot be used to display the selected area of the source bitmap. To
display the selected area of the source bitmap, use a FoxHWND control to accept
and display the object.

(c) Microsoft Corporation 2000, All Rights Reserved. Contributions by John Desch,
Microsoft Corporation.


Additional query words: PicClip

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Keywords          : kbfile kbsample kbActiveX kbCtrl kbvfp500 kbvfp500a kbvfp600 kbGrpDSFox kbDSupport 
Technology        : kbVFPsearch kbAudDeveloper kbVFP500 kbVFP600 kbVFP500a
Version           : WINDOWS:5.0,5.0a,6.0

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