Using Win32 functions in Visual FoxPro Image Gallery
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More code examples    Listed functions    Add comment     W32 Constants      Translate this page Printer friendly version of this code sample
 
#DEFINE ANSI_CHARSET          0
#DEFINE OUT_DEFAULT_PRECIS    0
#DEFINE OUT_DEVICE_PRECIS     5
#DEFINE OUT_OUTLINE_PRECIS    8
 
#DEFINE CLIP_DEFAULT_PRECIS   0
#DEFINE CLIP_STROKE_PRECIS    2
 
#DEFINE DEFAULT_QUALITY       0
#DEFINE PROOF_QUALITY         2
 
#DEFINE DEFAULT_PITCH         0
#DEFINE FW_BOLD             700
 
#DEFINE TRANSPARENT           1
#DEFINE OPAQUE                2
 
    DO decl
 
    lcText = "Printing Text"
    FOR ii=200 TO 1 STEP-1
        lnColor = Rgb(Max(0,255-ii), Max(0,128-ii*5), Min(255,128+ii*10))
        = _print (lcText, lnColor, -ii)
 
        ii = ii - 30
        = _print (lcText, Rgb(80,80,80), -ii)
    ENDFOR
    = _print (lcText, Rgb(164,0,0), 0)
 
PROCEDURE  _print (lcText, lnColor, lnAngle)
    hFont = CreateFont (;
        100,0, lnAngle,lnAngle, FW_BOLD, 0,0,0, ANSI_CHARSET,;
        OUT_OUTLINE_PRECIS, CLIP_STROKE_PRECIS,;
        PROOF_QUALITY, DEFAULT_PITCH, "Times New Roman")
 
    hwnd = GetActiveWindow()
    hdc = GetWindowDC (hwnd)
 
    * select new font into the device context
    * and delete the old one
    = DeleteObject (SelectObject (hdc, hFont))
 
    * set text color on a transparent background
    = SetTextColor (hdc, lnColor)
    = SetBkMode (hdc, TRANSPARENT)
 
    * the printing
    = TextOut (hdc, 50, 100, lcText, Len(lcText))
 
    * release system resources
    = DeleteObject (hFont)
    = ReleaseDC (hwnd, hdc)
 
PROCEDURE  decl
    DECLARE INTEGER GetActiveWindow IN user32
    DECLARE INTEGER GetWindowDC IN user32 INTEGER hwnd   
 
    DECLARE INTEGER DeleteObject IN gdi32 INTEGER hObject
    DECLARE INTEGER ReleaseDC IN user32;
        INTEGER hwnd, INTEGER hdc
 
    DECLARE INTEGER SetTextColor IN gdi32;
        INTEGER hdc, INTEGER crColor
 
    DECLARE INTEGER SelectObject IN gdi32;
        INTEGER hdc, INTEGER hObject
 
    DECLARE INTEGER TextOut IN gdi32;
        INTEGER hdc, INTEGER x, INTEGER y,;
        STRING  lpString, INTEGER nCount
 
    DECLARE INTEGER SetBkMode IN gdi32;
        INTEGER hdc, INTEGER iBkMode
 
    DECLARE INTEGER CreateFont IN gdi32;
        INTEGER nHeight, INTEGER nWidth,;
        INTEGER nEscapement, INTEGER nOrientation,;
        INTEGER fnWeight, INTEGER fdwItalic,;
        INTEGER fdwUnderline, INTEGER fdwStrikeOut,;
        INTEGER fdwCharSet,;
        INTEGER fdwOutputPrecision,;
        INTEGER fdwClipPrecision,;
        INTEGER fdwQuality,;
        INTEGER fdwPitchAndFamily,;
        STRING  lpszFace
 
 

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2299 bytes  
Created: 2001-07-12 12:00:00  
Modified: 2001-11-04 21:25:36  
Visits in 7 days: 87  
Listed functions:
CreateFont
DeleteObject
GetActiveWindow
GetWindowDC
ReleaseDC
SelectObject
SetBkMode
SetTextColor
TextOut
Printer friendly API declarations
My comment:
Any output from FoxPro command like CLEAR and ?/?? wipes the image produced by this code. Curiously CLEAR command even standing above the TextOut in a source code sometimes removes any printing produced by the TextOut.
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