Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
GDI+: Implementing image scrolling with inertia
Obtaining names and positions for shortcuts located on the Windows Desktop
Capturing keyboard activity of another application with the Raw Input API (VFP9)
Enumerating raw input devices attached to the system (keyboard, mouse, human interface device)
Switching between keyboard layouts
Browsing Windows Known Folders (Special Folders)
Generating random cryptographic keys
Enumerating devices installed on the local machine
Displaying icons in the system tray (VFP9)
GDI+ fun: roach-infested desktop
How to load a user profile
Compressing and decompressing files with Windows API Runtime Library routines
Printing Image File, programmatically set print page orientation to landscape
Custom GDI+ class
Disconnecting USB Mass Storage Device programmatically
Displaying dimmed window behind VFP top-level form
How to find which fonts Windows uses for drawing captions, menus and message boxes
Reading and setting system access privileges for the current process
Winsock: resolving an address to a host name
Adding a background image to VFP report (VFP9, ReportListener)
GDI+: custom Clock Control
How to enumerate logon sessions on local computer
How to display Windows On-Screen Keyboard
Moving shortcut to a specified position on the Windows Desktop
Storing screen shot of a form to bitmap file

User rating: 0/10 (0 votes)
Rate this code sample:
  • ~
More code examples    Listed functions    Add comment     W32 Constants      Translate this page Printer friendly version of this code sample
Before you begin:
Call this code from a VFP form to store its snapshot to a bitmap file (24-bpp). Make sure that the target file (m.lcFilename) is a valid path.

Check similar example Storing screen shot of a form to enhanced metafile (*.emf).

See also:

Download ScreenCapture Library

  • GDI+: saving image of FoxPro form to graphics file (BMP, GIF, JPG, PNG, TIF)
  • Printing the image of a FoxPro form
  • Storing clipboard contents to a BMP file
  • Using the LoadImage() to display a BMP file on the main VFP window
  • How to print a bitmap file

  •  
      Members area. Log in to view this example.
     
      User name:
      Password:
     
     
      Forgot your password?
     
      Sign up for
    the Membership
     
     


    User rating: 0/10 (0 votes)
    Rate this code sample:
    • ~
    9378 bytes  
    Created: 2001-11-05 20:12:41  
    Modified: 2011-03-28 09:42:56  
    Visits in 7 days: 93  
    Listed functions:
    BitBlt
    CloseHandle
    CopyIcon
    CreateCompatibleBitmap
    CreateCompatibleDC
    CreateFile
    DeleteDC
    DeleteObject
    DestroyIcon
    DrawIcon
    GetCursorInfo
    GetDIBits
    GetFocus
    GetWindowDC
    GetWindowRect
    GlobalAlloc
    GlobalFree
    ReleaseDC
    SelectObject
    ShowCursor
    WriteFile
    Printer friendly API declarations
    My comment:
    The resulting file is forced to be in 24-bit format (24 bits per pixel). It is not compressed.

    The part of DIB (Device-Independent Bitmap), that contains pixel data, can be too large for managing it via VFP strings. For that reason the GlobalAlloc/GlobalFree combination is used to allocate/release memory for this buffer.

    The WriteFile function is declared in two different ways: one for strings and another for pointers.

    Microsoft Knowledge Base Article - 161299
    HOWTO: Capture and Print the Screen, a Form, or Any Window

    * * *
    April 5, 2006: a procedure added that draws current mouse cursor on the bitmap.

    * * *
    FileFormat.Info references on file extensions, file formats, MIME types, data conversion between formats and more.
    Word Index links for this example:
    Translate this page:
      Spanish    Portuguese    German    French    Italian  
    FreeTranslation.com offers instant, free translations of text or web pages.
    User Contributed Notes:
    There are no notes on this subject.


    Copyright 2001-2016 News2News, Inc. Before reproducing or distributing any data from this site please ask for an approval from its owner. Unless otherwise specified, this page is for your personal and non-commercial use. The information on this page is presented AS IS, meaning that you may use it at your own risk. Microsoft Visual FoxPro and Windows are trade marks of Microsoft Corp. All other trademarks are the property of their respective owners. 

    Privacy policy
    Credits: PHP (4.4.9), an HTML-embedded scripting language, MySQL (5.6.30), the Open Source standard SQL database, AceHTML Freeware Version 4, freeware HTML Editor of choice.   Hosted by Korax Online Inc.
    Google
    Advertise here!