Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
How to change display settings: screen resolution, screen refresh rate
Custom GDI+ class
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Using the LoadImage function to have a bitmap file loaded and displayed on VFP main window
System Image List Viewer
Winsock: sending email messages (SMTP, port 25)
Creating the Save dialog box to specify the drive, directory, and name of a file to save
The window and its ancestors
Using Video Capture: displaying on FoxPro form frames and previewing video obtained from a digital camera
Printing Image File, programmatically set print page orientation to landscape
How to convert a bitmap file to monochrome format (1 bpp)
Custom HttpRequest class (WinHTTP)
Custom FTP Class for Visual FoxPro application
Mapping and disconnecting network drives
Using EnumPrinters function to enumerate locally installed printers
How to download a file from the FTP server using FtpGetFile
Displaying the associated icons and descriptions for files and folders
How to activate Windows Calculator
Displaying icons in the system tray (VFP9)
Drawing Windows predefined bitmaps using the LoadBitmap functions
Using FoxTray ActiveX control: System Tray Icon and menu attached to VFP form
Sending email messages with Simple MAPI
Drawing standard Windows icons

User rating: 8.5/10 (2 votes)
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More code examples    Listed functions    Add comment     W32 Constants      Translate this page Printer friendly version of this code sample
Before you begin:

See also:
  • Displaying the associated icons and descriptions for files and folders
  • How to view icons stored in executable files
  • Drawing Windows frame controls
  • Drawing Windows predefined bitmaps
  •  
    PUBLIC frm
    frm = CREATEOBJECT("Tform")
    frm.Visible = .T.
    * end of main
     
    DEFINE CLASS Tform As Form
    * Icon Ids
    #DEFINE IDI_APPLICATION  32512
    #DEFINE IDI_ASTERISK  32516
    #DEFINE IDI_ERROR  32513
    #DEFINE IDI_EXCLAMATION  32515
    #DEFINE IDI_HAND  IDI_ERROR
    #DEFINE IDI_INFORMATION  IDI_ASTERISK
    #DEFINE IDI_QUESTION  32514
    #DEFINE IDI_WARNING  IDI_EXCLAMATION
    #DEFINE IDI_WINLOGO  32517
     
        Width=400
        Height=130
        AutoCenter = .T.
        Caption = " Drawing standard Windows Icons"
     
        ADD OBJECT cmd As CommandButton WITH;
            Caption="Draw", Width=80, Height=27
     
    PROCEDURE Init
        THIS.declare
        THIS.Resize
     
    PROCEDURE Resize
        WITH THIS.cmd
            .Left = Int((ThisForm.Width - .Width)/2)
            .Top = THIS.Height - .Height - 20
        ENDWITH
        ThisForm.DrawIcons
     
    PROCEDURE DrawIcons
        THIS._draw(IDI_APPLICATION, 20,20)
        THIS._draw(IDI_HAND, 60,20)
        THIS._draw(IDI_QUESTION, 100,20)
        THIS._draw(IDI_EXCLAMATION, 140,20)
        THIS._draw(IDI_ASTERISK, 180,20)
        THIS._draw(IDI_WINLOGO, 220,20)
        THIS._draw(IDI_WARNING, 260,20)
        THIS._draw(IDI_ERROR, 300,20)
        THIS._draw(IDI_INFORMATION, 340,20)
     
    PROTECTED PROCEDURE _draw(lnIconId, X,Y)
        LOCAL hWindow, hdc, hicon
        hWindow = THIS.HWnd && GetFocus() for older VFP versions
     
        hdc = GetDC(hWindow)
     
        hicon = LoadIcon(0, lnIconId)
        IF hicon <> 0
            = DrawIcon(hdc, X,Y, hicon)
        ENDIF
        = ReleaseDC(hWindow, hdc)
     
    PROCEDURE declare
        DECLARE INTEGER GetFocus IN user32
        DECLARE INTEGER GetDC IN user32 INTEGER hWindow
     
        DECLARE INTEGER LoadIcon IN user32;
            INTEGER hInstance, INTEGER lpIconName
     
        DECLARE SHORT DrawIcon IN user32;
            INTEGER hDC, INTEGER X, INTEGER Y, INTEGER hIcon
     
        DECLARE INTEGER ReleaseDC IN user32;
            INTEGER hWindow, INTEGER hdc 
     
    PROCEDURE Paint
        ThisForm.DrawIcons
     
    PROCEDURE Moved
        ThisForm.DrawIcons
     
    PROCEDURE cmd.Click
        ThisForm.DrawIcons
     
    ENDDEFINE
     

    User rating: 8.5/10 (2 votes)
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    1864 bytes  
    Created: 2001-08-21 12:00:00  
    Modified: 2009-01-21 23:37:41  
    Visits in 7 days: 72  
    Listed functions:
    DrawIcon
    GetDC
    GetFocus
    LoadIcon
    ReleaseDC
    Printer friendly API declarations
    My comment:
    Since the icons are displayed not via native VFP controls, the Resize, Paint and Moved methods of the form need to be instructed to redraw the icons. Otherwise the icons would be wiped out when, for example, the form after having been partially moved beyond the main VFP window then is moved within.
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