Using Win32 functions in Visual FoxPro Image Gallery
File Management
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CopyFile
CopyFileTransacted
CreateDirectory
CreateFile
CreateFileTransacted
CreateHardLink
CreateSymbolicLink
DeleteFile
DeleteFileTransacted
FindClose
FindCloseChangeNotification
FindFirstChangeNotification
FindFirstFile
FindNextChangeNotification
FindNextFile
FlushFileBuffers
GetBinaryType
GetCurrentDirectory
GetDriveType
GetFileAttributes
GetFileAttributesEx
GetFileInformationByHandle
GetFileType
GetFullPathName
GetLongPathName
GetShortPathName
GetTempFileName
GetTempPath
LockFile
MoveFile
MoveFileTransacted
OpenFile
QueryDosDevice
ReadDirectoryChangesW
ReadFile
RemoveDirectory
RemoveDirectoryTransacted
ReplaceFile
SearchPath
SetCurrentDirectory
SetEndOfFile
SetFileAttributes
SetFilePointer
SetFilePointerEx
SetSearchPathMode
UnlockFile
WriteFile
_lclose
_lopen
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Storing screen shot of a form to bitmap file

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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

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    9378 bytes  
    Created: 2001-11-05 20:12:41  
    Modified: 2011-03-28 09:42:56  
    Visits in 7 days: 181  
    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.
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