Using Win32 functions in Visual FoxPro Image Gallery
Code examples:
Custom GDI+ class
How to make application automatically close all documents it opened
How to put a vertical text scrolling on the form (a movie cast)
How to load a user profile
GDI+: Implementing image scrolling with inertia
Displaying dimmed window behind VFP top-level form
Vertical Label control
Extensible Storage Engine class library
Subclassing CommandButton control to create BackColor property
Disconnecting USB Mass Storage Device programmatically
Using Month Calendar Control (VFP9, Comctl32.dll)
Enumerating devices installed on the local machine
Printing Image File, programmatically set print page orientation to landscape
Obtaining names and positions for shortcuts located on the Windows Desktop
Splash Screen for the VFP application
Attaching menu to a top-level form
Custom HttpRequest class (WinHTTP)
How to change display settings: screen resolution, screen refresh rate
Reading and setting system access privileges for the current process
Browsing Windows Known Folders (Special Folders)
Placing an arbitrary rectangular area of main VFP window on the Clipboard
Windows Shell Icons displayed and exported to ICO files (Vista)
Creating irregularly shaped FoxPro form using transparency color key
How to copy the image of a form to the Clipboard using Bitmap API functions
Enumerating MIDI output devices

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:
See also:
  • How to play MIDI notes
  • DO declare
    
    LOCAL nCount, nIndex, nBufsize, cBuffer
    
    nCount = midiOutGetNumDevs()
    FOR nIndex=0 TO nCount-1
        nBufsize = 1024
        cBuffer = REPLICATE(CHR(0), nBufsize)
    
        IF midiOutGetDevCaps(nIndex, @cBuffer, nBufsize) = 0
            LOCAL oMidiOutCaps As MIDIOUTCAPS
            oMidiOutCaps = CREATEOBJECT("MIDIOUTCAPS", cBuffer)
            ? oMidiOutCaps.szPname
        ENDIF
    NEXT
    * end of main
    
    PROCEDURE declare
        DECLARE INTEGER midiOutGetNumDevs IN Winmm
    
        DECLARE INTEGER midiOutOpen IN Winmm;
            INTEGER @lphmo, INTEGER uDeviceID, INTEGER dwCallback,;
            INTEGER dwCallbackInstance, INTEGER dwFlags
    
        DECLARE INTEGER midiOutClose IN Winmm INTEGER hmo  
    
        DECLARE INTEGER midiOutGetDevCaps IN Winmm;
            INTEGER uDeviceID, STRING @lpMidiOutCaps,;
            INTEGER cbMidiOutCaps
    
    DEFINE CLASS MIDIOUTCAPS As Session
    #DEFINE MAXPNAMELEN 32
        wMid=0
        wPid=0
        vDriverVersion=0
        szPname=""
        wTechnology=0
        wVoices=0
        wNotes=0
        wChannelMask=0
        dwSupport=0
    
    PROCEDURE Init(cBuffer)
        THIS.wMid = buf2word(SUBSTR(cBuffer, 1, 2))
        THIS.wPid = buf2word(SUBSTR(cBuffer, 3, 2))
        THIS.vDriverVersion = buf2dword(SUBSTR(cBuffer, 5, 4))
    
        THIS.szPname = SUBSTR(cBuffer, 9, MAXPNAMELEN) + CHR(0)
        THIS.szPname = SUBSTR(THIS.szPname, 1, AT(CHR(0),THIS.szPname)-1)
    
        THIS.wTechnology = buf2word(SUBSTR(cBuffer, MAXPNAMELEN+9, 2))
        THIS.wVoices = buf2word(SUBSTR(cBuffer, MAXPNAMELEN+11, 2))
        THIS.wNotes = buf2word(SUBSTR(cBuffer, MAXPNAMELEN+13, 2))
        THIS.wChannelMask = buf2word(SUBSTR(cBuffer, MAXPNAMELEN+15, 2))
        THIS.dwSupport = buf2dword(SUBSTR(cBuffer, MAXPNAMELEN+17, 4))
    
    ENDDEFINE
    
    FUNCTION buf2dword(cBuffer)
    RETURN Asc(SUBSTR(cBuffer, 1,1)) + ;
        BitLShift(Asc(SUBSTR(cBuffer, 2,1)),  8) +;
        BitLShift(Asc(SUBSTR(cBuffer, 3,1)), 16) +;
        BitLShift(Asc(SUBSTR(cBuffer, 4,1)), 24)
    
    FUNCTION buf2word(lcBuffer)
    RETURN Asc(SUBSTR(lcBuffer, 1,1)) + ;
           Asc(SUBSTR(lcBuffer, 2,1)) * 256
    
    
    

    User rating: 0/10 (0 votes)
    Rate this code sample:
    • ~
    1903 bytes  
    Created: 2006-03-02 09:02:20  
    Modified: 2008-04-10 08:04:40  
    Visits in 7 days: 45  
    Listed functions:
    midiOutClose
    midiOutGetDevCaps
    midiOutGetNumDevs
    midiOutOpen
    Printer friendly API declarations
    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.
    Last Topics Visited (54.224.155.75)
    25 sec.Function: 'CryptHashData'
    Function group: 'Cryptography Reference'
    2.27 min.Function: 'CeFindAllFiles'
    Function group: 'Remote Application Programming (RAPI)'
    2 day(s)Example: 'How to convert a bitmap file to monochrome format (1 bpp)'
    Language: 'Visual FoxPro'
    5 day(s)Function: 'SHRegOpenUSKey'
    Function group: 'Registry'
    Google
    Advertise here!