PNG Images

[Leonard Kellogg]

Hello! This is my first post here.

I don't have PowerBASIC yet, but the answer(s) to this question
might determine whether I get it.

What is needed (in general terms, not code or even pseudocode)
to load and display PNG graphic images with PowerBASIC?

-- Leonard

[RyanCross]

You can use GDI+ to load PNGs.

DECLARE FUNCTION GdipLoadImageFromFile LIB "gdiplus.dll" ALIAS "GdipLoadImageFromFile" (BYVAL FilName AS STRING, nImage&) AS LONG

Patrice has an include file for the GDI+ flat API available for purchase at:

http://www.zapsolution.com/winlift/index.htm

Or his GDImage library is very nice.

Here' some pseudo code:

GdiplusStartup ByRef GDIpHandle <---- Intialize GDI+
GdipLoadImageFromFile "MyPNG.png", ByRef ImageHandle <----- Load PNG
GdipCreateFromHDC WindowDC, ByRef GraphicHandle <------ Create Graphic from Windows DC
GdipDrawImageI GraphicHandle, ImageHandle, X, Y <---- Draw Image
GdipDeleteGraphics GraphicHandle <---- Delete GraphicsHandle from memory
GdipDisposeImage ImageHandle <------ Delete Image from Memory
GdiplusShutdown GDIpHandle <---- Shut down GDI+

That's just a Pseudo Code example

[Don Schullian]

Hi Leonard,

I've been using GDI+ for my imaging for the past couple of years and it works great.

[Leonard Kellogg]

I gather, first, that when you say "GDI+" you mean "gdiplus.dll".
And second, that gdiplus.dll works with Windows 2000, XP, and
Vista, but not Windows 98 or ME. And third, that gdiplus.dll is
included in XP and Vista but not in Windows 2000. Is that right?

Is there a DLL available for reading .png images that works under
Windows 98 and ME?

-- Leonard

[Edwin Knoppert]

gdiplus.dll comes as redistributable.

PS, windows 98 is obsolete.. move on

[Edwin Knoppert]

http://www.microsoft.com/downloads/details.aspx?FamilyID=6a63ab9c-df12-4d41-933c-be590feaa05a&displaylang=en

[Richard Angell]

AIUI Windows 98 or ME will work with GDI+, but you have to get the re-ditributable first. And it also will work with W2K. The re-ditributable is free.