Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
Custom GDI+ class
Splash Screen for the VFP application
Displaying dimmed window behind VFP top-level form
Subclassing CommandButton control to create BackColor property
Vertical Label control
Storing content of the Clipboard to a bitmap file
How to make a VFP form fading out when released (GDI version)
How to put a vertical text scrolling on the form (a movie cast)
Printing text with the Escape function
How to play AVI file on the _screen
How to put a horizontal text scrolling on the form (a news line, marquee)
Storing screen shot of a form to bitmap file
Enumerating devices installed on the local machine
Bitmap Class for Visual FoxPro application
Custom FTP Class for Visual FoxPro application
Playing WAV sounds simultaneously
Enumerating Processes -- WinNT
Passing data records between VFP applications via the Clipboard
How to view icons stored in executable files (Icon Viewer) - II
Monitoring clipboard content changes (VFP9)
Obtaining names and positions for shortcuts located on the Windows Desktop
Copying picture of the active form to the Clipboard using Enhanced Metafile API functions
CryptoAPI: Collection of Providers class
GDI+: Implementing image scrolling with inertia
How to put a horizontal text scrolling on the form (a news line, marquee)

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See also:
  • Scrolling text on the form vertically (a movie cast)
  • Shaking VFP form controls
  • Playing AVI on _screen
  • Displaying animated images
  • Form Magnifier

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    7694 bytes  
    Created: 2002-12-22 13:45:42  
    Modified: 2013-07-09 11:07:23  
    Visits in 7 days: 303  
    Listed functions:
    BitBlt
    CreateCompatibleBitmap
    CreateCompatibleDC
    CreateFont
    CreateSolidBrush
    DeleteDC
    DeleteObject
    FillRect
    GetActiveWindow
    GetDesktopWindow
    GetFocus
    GetTickCount
    GetWindowDC
    ReleaseDC
    SelectObject
    SetBkColor
    SetBkMode
    SetTextColor
    TextOut
    Printer friendly API declarations
    My comment:
    The complete character string is written on invisible canvas, which is a virtual device context.

    At each Timer tick an offset is calculated, and a smaller part of the large image is copied from the invisible canvas to a visible one.

    A visible canvas is the Device Context created either for an instance of a Form or for the _SCREEN object -- the object must have valid HWnd.

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    WPF XAML for the C# sample code:

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