Using ListView to load JPG/GIF - Updates?

[Gary Beene]

I ran into this code ... tested it and it seemed to work fine.

http://www.powerbasic.com/support/pbforums/showthread.php?t=24710

Has anyone updated it to load the image into one of the graphic targets (Graphic Control, Memory Bitmap, or Graphic Window)?

I was surprised to find so little mention of it. Seems like a very useful niche code - especially if the image can be moved to one of the graphic targets to make it available for other PowerBASIC actions.

... added later - here's another online link discussing the approach.

http://www.codeguru.com/cpp/controls/listview/backgroundcolorandimage/article.php/c12345

[José Roca]

To use a ListView to load an image and later move it to a graphic control? A bit cumbersome, don't think you? Much easier to use GDI+.

See this example in my forum:

http://www.jose.it-berater.org/smfforum/index.php?topic=1847.0

The zipped file contains three examples, one using SDK code, another using DDT and another using a DDT graphic control:

' ========================================================================================
' GdipDrawImage
' ========================================================================================

' SED_PBWIN
#COMPILE EXE
#DIM ALL
#INCLUDE "GDIPLUS.INC"

%IDC_GRAPHIC  = 101

' ========================================================================================
' The following example draws an image with its upper-left corner at (10, 10).
' ========================================================================================
SUB GDIP_DrawImage (BYVAL hdc AS DWORD)

   LOCAL hStatus AS LONG
   LOCAL pGraphics AS DWORD
   LOCAL pImage AS DWORD
   LOCAL strFileName AS STRING

   hStatus = GdipCreateFromHDC(hdc, pGraphics)

   ' // Create the Image object
   strFileName = UCODE$("climber.jpg")
   hStatus = GdipLoadImageFromFile(STRPTR(strFileName), pImage)

   ' // Draw the image
   hStatus = GdipDrawImage(pGraphics, pImage, 10, 10)

   ' // Cleanup
   IF pImage THEN GdipDisposeImage(pImage)
   IF pGraphics THEN GdipDeleteGraphics(pGraphics)

END SUB
' ========================================================================================

' ========================================================================================
' Main
' ========================================================================================
FUNCTION WINMAIN (BYVAL hInstance AS DWORD, BYVAL hPrevInstance AS DWORD, BYVAL lpszCmdLine AS ASCIIZ PTR, BYVAL nCmdShow AS LONG) AS LONG

   LOCAL hr AS LONG
   LOCAL hDlg AS DWORD
   LOCAL hdc AS DWORD
   LOCAL token AS DWORD
   LOCAL StartupInput AS GdiplusStartupInput

   ' Initialize GDI+
   StartupInput.GdiplusVersion = 1
   hr = GdiplusStartup(token, StartupInput, BYVAL %NULL)
   IF hr THEN
      MSGBOX "Error initializing GDI+"
      EXIT FUNCTION
   END IF

   ' Create a new dialog
   DIALOG NEW PIXELS, 0, "GdipDrawImage", , , 420, 250, %WS_SYSMENU TO hDlg

   ' Add a graphic control
   CONTROL ADD GRAPHIC, hDlg, %IDC_GRAPHIC,"", 0, 0, 420, 250
   ' Select the drawing target
   GRAPHIC ATTACH hDlg, %IDC_GRAPHIC
   ' Set the foreground and background color
   GRAPHIC COLOR %BLACK, %WHITE
   ' Clear the entire selected graphic window
   GRAPHIC CLEAR
   ' Retrieve the handle of the device context
   GRAPHIC GET DC TO hdc
   ' Draw the graphics
   GDIP_DrawImage hdc

   DIALOG SHOW MODAL hDlg, CALL DlgProc

   ' Shutdown GDI+
   GdiplusShutdown token

END FUNCTION
' ========================================================================================

' ========================================================================================
' Main Dialog procedure
' ========================================================================================
CALLBACK FUNCTION DlgProc() AS LONG

   SELECT CASE CBMSG

      CASE %WM_COMMAND
         SELECT CASE CBCTL
            CASE %IDCANCEL
               IF CBCTLMSG = %BN_CLICKED THEN DIALOG END CBHNDL, 0
         END SELECT

   END SELECT

END FUNCTION
' ========================================================================================

[Mike Doty]

Jose,
Which win32api.inc do you use? Get duplicate equate messages.
http://www.powerbasic.com/support/downloads/windows.htm (not current.)

win32api.inc with the current compilers is dated Last Update: 26 January 2009
The one in the powerbasic support forum is dated 2005. http://www.powerbasic.com/support/downloads/windows.htm (old)
It might be nice for PowerBASIC to work with Jose on this.

[Paul Squires]

Mike,

You should Jose's new WinAPI headers that he provides for free. Check out the latest version (1.14) available at http://www.jose.it-berater.org/smffo...hp?board=344.0

Basically, you would install his includes into a separate folder and then point the compiler to that folder rather than the one that ships with the compiler (ie. the \WinAPI folder). Jose's includes are much more complete than the ones that ship with the compiler.

[Mike Doty]

916 files and it worked immediately.
Thank you!

[Paul Squires]

No problem Mike - happy that I could help. It boggles my mind the amount of work and effort that Jose has put into these new include files. It is an amazing work and all of Jose's new code is based on using these includes. The new includes have opened up a wide range of new technologies for PB'ers.

[Gary Beene]

Thanks Jose,

I'm having trouble finding the link to the gdiplus.inc.

I see a Part1/2 in the Source Code forum, circa 2002.

Is there a more recent version?

I'll give your code a try! I've been wanting to step into the GDI+ arena and play, this will be a good time.

[José Roca]

I use my own include files, available in my forum. Please read the posts above.

[José Roca]

Deleted.