Legacy ImageMagick Discussions Archive

OS: Windows Vista
C++ complier: Visual C++ Express

Problem: If you give it a picture with a DateTime in set it crashes when outputted or stored into a std::string and used later on.

Magick::Image image;
image.read("c:\\somepic.jpg");
std::cout << image.attribute("EXIF:DateTime");

Any ideas ?

We tried your code snippet and it works fine for us with the latest ImageMagick release with VS 7. We substituted the code snippet in the button project generally found at c:/Program Files/ImageMagick-6.3.6-Q16/Magick++_demos . In the past, users that posted similar problems generally discovered there was a compiler option that they forgot to set.

Would you happen to know what the compile options are ?

I currently have:
source:
---
#include <stdio.h>
#include <stdlib.h>
#include <Magick++.h>

#include <iostream>

void main()
{
Magick::Image image;
image.read("C:\\somepic.jpg");
std::cout << image.attribute("EXIF:DateTime");
}
---
cl /EHsc /D_WIN32_WINNT=0x0501 -DWIN32 -c -Fo mytest.cpp
link -OUT:mytest.exe mytest.obj "C:\Program Files\ImageMagick-6.3.6-Q16\lib\CORE_RL_Magick++_.lib"

output:
2006:05:05 10:36:14 (crashes after this)

We always build with the configure script provided with the ImageMagick source distribution and we build from the Visual Studio 7 IDE. We have no experience building from the command line so we can't help you. Perhaps another user will post with some insight.

Thanks for you help...

Sorry to ask a silly question but can you point me to a website or an example on how you build using Visual Studio 7 IDE ?

I will try and do the same with Visual Studio 2005 Express (even though I have tried and it dies at image.read(..)

Ah well..

Just to let you know how far I have got:

HEAP[button.exe]: Invalid Address specified to RtlFreeHeap( 00EF0000, 0103FC20 )
Windows has triggered a breakpoint in button.exe.

This may be due to a corruption of the heap, and indicates a bug in button.exe or any of the DLLs it has loaded.

Any ideas ?

Thanks