Changeset: 237 fdbozzo - 07/05/2014 20:47:21:
- Agregado soporte de evaluación de propiedades desde archivo externo (props_*.txt) - Agregado soporte de evaluación de propiedades por clase - La propiedad Picture de una clase form se pierde y no muestra la imagen. No ocurre con la propiedad Picture de los controles (Fidel Charny) - Algunas opciones del optiongroup pierden el width cuando se subclasan de una clase con autosize=.T. (Miguel Duran)
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fdbozzo
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TESTS/readme.txt
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201
TESTS/readme.txt
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Last year, I've spend a lot of time to develop a picture treatment dll, there are 6 functions in this dll,
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they are:
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1 formtobmp
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2 formtobmpA
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3 tojpeg
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4 tobmp
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5 getbmpdimension
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6 getjpgdimension
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In this paper, I'll simply explain their functionality, parameters and how to use them.
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Anybody who need source code of this dll, please email to njjane@21cn.com (they are write by are C++,not vfp).
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James Khan
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njjane@21cn.com
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http://www.myf1.net/foxcryptor/
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====================================================================================================
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Important : To correct use PCT_DLL.dll, you must put it to your system directory or current directory!!!
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1 formtobmp
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--------------------------------------------------------------------------------
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Description:
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capture window or screen image into a bitmap file
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Declareation:
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Declare Integer formtobmp IN "PCT_DLL.dll" integer hwnd,String bmpFileName
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Parameters:
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hwnd
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Handle to the window to be saves to a bitmap file. if this parameter is zero, then saves desktop to a bitmap file.
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bmpFileName
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The bitmap filename to be save. must include full path name.
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Note:
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The function returns a zero result on success,else 1 is returned.
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Example in Visual FoxPro:
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retVal = formtobmp(0,"c:\screen.bmp") && Save screen to file c:\screen.bmp
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if retval = 0 && if success
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messagebox("Capture screen ok! bmp file has been saved to file c:\screen.bmp")
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endif
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--------------------------------------------------------------------------------
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2 formtobmpA
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--------------------------------------------------------------------------------
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Description:
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also a function to capture window or screen image into a bitmap file,but in this function,
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you can specified a area of screen/window to save.
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Declareation:
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Declare Integer formtobmpA IN "PCT_DLL.dll" string bmpfilename,integer nX,integer nY,integer nX2,integer nY2
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Parameters:
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bmpFileName
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The bitmap filename to be save. must include full path name.
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nX
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x-coord of upper-left corner of bitmap file
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nX2
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x-coord of lower-right corner of bitmap file
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nY
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y-coord of upper-left corner of bitmap file
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nY2
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y-coord of lower-right corner of bitmap file
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Note:
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The function returns a zero result on success,else 1 is returned.
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Example in Visual FoxPro:
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retVal = formtobmpA("c:\screen0.bmp",20,20,400,400) && Save screen to file c:\screen.bmp
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if retval = 0
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messagebox("Capture screen ok!")
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endif
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--------------------------------------------------------------------------------
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3 tojpeg
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--------------------------------------------------------------------------------
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Description:
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Convert a bmp file to a jpg file
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Declareation:
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Declare Integer tojpeg IN "PCT_DLL.dll" String bmpfilename, String jpgfilename
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Parameters:
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bmpfilename
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BMP filename to be convert.
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jpgfilename
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JPEG filename
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Note:
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The function returns a zero result on success,else 1 is returned.
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Example in Visual FoxPro:
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retval = tojpeg("c:\screen.bmp","c:\screen.jpg") && Convert c:\screen.bmp to c:\screen.jpg
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if retval = 0
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messagebox("Convert bitmap to jpeg ok!")
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endif
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--------------------------------------------------------------------------------
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4 tobmp
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--------------------------------------------------------------------------------
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Description:
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Convert a jpg file to a bmp file
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Declareation:
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Declare Integer tobmp IN "PCT_DLL.dll" String jpgfilename, String bmpfilename
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Parameters:
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jpgfilename
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JPEG filename to be convert.
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bmpfilename
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BMP filename
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Note:
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The function returns a zero result on success,else 1 is returned.
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Example in Visual FoxPro:
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retval = tobmp("c:\screen.jpg","c:\screen2.bmp") && Convert c:\screen.jpg to c:\screen2.bmp
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if retval = 0
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messagebox("Convert jpeg to bitmap success!")
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endif
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--------------------------------------------------------------------------------
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5 getbmpdimension
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--------------------------------------------------------------------------------
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Description:
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Get a dimensions of a bitmap
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Declareation:
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Declare Integer getbmpdimension IN "PCT_DLL.dll" string bmpfilename, integer @ nwidth,integer @ nheight
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Parameters:
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bmpfilename
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origin bitmap filename.
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nwidth
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bitmap's width measured in pixels.
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nheight
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bitmap's height measured in pixels.
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Note:
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if success, return value 0, else return 1.
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if success, variable nwidth hold the bitmap's width ,variable nheight hold the bitmap's height.
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Example in Visual FoxPro:
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nwidth=0
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nheight=0
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retval = getbmpdimension("c:\screen.bmp",@ nwidth, @ nheight)
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if retval = 0
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messagebox("Width:"+str(nwidth)+chr(13)+"Height:"+str(nheight))
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endif
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--------------------------------------------------------------------------------
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6 getjpgdimension
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--------------------------------------------------------------------------------
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Description:
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Get a dimensions of a jpeg file
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Declareation:
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Declare Integer getjpgdimension IN "PCT_DLL.dll" string jpgfilename, integer @ nwidth,integer @ nheight
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Parameters:
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jpgfilename
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origin jpeg filename.
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nwidth
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jpeg's width measured in pixels.
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nheight
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jpeg's height measured in pixels.
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Note:
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if success, return value 0, else return 1.
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if success, variable nwidth hold the jpeg's width ,variable nheight hold the jpeg's height.
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Example in Visual FoxPro:
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nwidth=0
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nheight=0
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retval = getjpgdimension("c:\screen.jpg",@ nwidth, @ nheight)
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if retval = 0
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messagebox("Width:"+str(nwidth)+chr(13)+"Height:"+str(nheight))
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endif
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clear dlls
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