Getting image dimensions

[Katie_Deely]

Hi there. Sorry to bother again. I don't get the tutorials and examples...

Let's say I want to display an image "E:\img\123.jpg" in a GUI. Usually I'd do that by using GUICtrlCreatePic($path, $x, $y, $width, $height).

Unfortunately, the width and height are changing with every picture and they are unknown as well...

First of all, how I can get the width and height of a given picture?

And is there any way that doesn't require me to constantly delete and create that window from scratch? 

Thanks!

[AutoBert]

With GDI-funcs you can get this info:

#include <GDIPlus.au3>

$sImageName = "C:\Program Files\AutoIt3\Examples\GUI\mslogo.jpg"

_GDIPlus_Startup()
$hImage = _GDIPlus_ImageLoadFromFile($sImageName)
$iX = _GDIPlus_ImageGetWidth($hImage)
$iY = _GDIPlus_ImageGetHeight($hImage)
_GDIPlus_ImageDispose($hImage)
_GDIPlus_Shutdown()

MsgBox(64, $sImageName, 'Width: ' & $iX & @CRLF & 'Height: ' & $iY)

 

Ps.: in the spoiler of https://autoit.de/index.php/Thread/21667-Beispiel-BMP-GIF-PNG-JPG-Viewer-Stand-10-02-2012/?page=Thread&threadID=21667 is a old example script of mine. A click on the "kopieren"-Icon helps copying the source.  It's running still yet but in the newer versions of autoit the $WM_DROPFILES in line 31 must be deleted.

You can drop BMP-, JPG-, GIF- and PNG images to the listview or add images by menu. Doubleclick on a lvitem will schow the image with the ratio of the original image.

It's only very small commented in german, but i hope my old scriptcode is good enough for understanding by reading code.

 

Added: BMP-Viewer.au3 and the included GUICtrlPic.au3

Edited May 29, 2016 by AutoBert