I am a beginner with regards to Qt. I need code to browse an image which is stored in system and add the selected image file (jpeg only) during run time.
Take a look at QFileDialog::getOpenFileName() for getting a file path to open.
EDIT
The second part of your question is not clear. There are a variety of ways to display an image in Qt. You have to be more specific.
Related
the heading says it all actually:
i want to convert a pdf file into several jpg images. This is to be a part of a software coded in c++ (I'm using Qt for my interface if that matters... :)
Preferably i want the images output to be 72 dpi.
Is there a easy way to do this?
Please comment if you need any more information form me, I'm grateful for any help, tips or answer!
Take pdf2image utility, and run it from you program, collecting its output files.
If you really need single executable (why?) — take a look at its source, and rip everything from it.
You should try to use poppler (or xpdf). You'll have full control of the rendering resolution and can take advantage of image output devices (ImageOutputDev) which will render pages to a framebuffer.Saving this framebuffer to jpeg with libjpeg is ,then , pretty straightforward.
Does anyone know how to take a PostScript file and display it in a GTK+ application?
I've been trying to use ImageMagick++ to open a PostScript file (which it does just fine), and then somehow open it as an Image in a GtkWidget. I can do this if I have ImageMagick++ save the PostScript file as a PNG image, and then open the PNG image in the GtkWidget, but I'd like to avoid saving a file just because I want to display it.
I've also been playing with using the ImageMagick++ Blob object, but I haven't been able to have GTK+ read the image in the Blob.
Thanks for any help.
The Gnome document viewer Evince has a reusable widget for viewing Postscript files in its libevince library. I don't know where to download it or where the documentation lives, though.
ptomato is in right direction, the easiest way to display a ps/pdf document inside gtk is use libevview and libevdocument (both are part of evince project)
Documentation:
http://developer.gnome.org/libevview/stable/
http://developer.gnome.org/libevdocument/stable/
I need an animation in my program. My designer draws animation in Flash and provides me with *.fla file. All I need is to grab 30-40 PNGs from this file and store them within my internal storage.
Is it possible grab resources from *.fla with C++ ? Probably, some Adobe OLE objects can help?
Please, advice.
Thanks in advance.
If I asked an artist to make me an icon I wouldn't expect to need to write code to convert a .3DS model into a usable icon format.
You can save yourself a lot of time and hassle by having your designer use File->Export and give you PNGs of the layers and frames instead of a .FLA file if that's the format you require for your implementation.
If that's not possible for some reason then you can probably find a flash decompiler that has a command line option which you could launch from your program to extract assets as part of your loading sequence but that is generally frowned upon because this is not the intended use of the proprietary format for .swf/.fla anymore than you should design applications to extract source code from a binary executable.
Assuming
You are using CS5
The assets used internally in the FLA are already PNG's as you want them to be.
Then simply get the FLA saved as a XFL file, and you will be able to grab them from the library folder ( but then why not just get them to mail you the pngs ? )
So if for some reason you can only get access to the fla and not the designer, then you can do it programatically by renaming the fla to .zip, extracting.. and you have the XFL format.
everyon my question is how to convert jpg to ico file, or how to make big icon with high resolution like in windows 7 icon, for example from games Purble place, that can be show at desktop in big view?
Links from tutorials, examples and functions from c++ will be higly respect ..:)
If you insist on using some form of automation, then have a look at imagemagick --- it's a cross-platform command-line utility that can do file conversions and all sorts of cool image manipulation.
I am doing a project in C++ and I want to open PDF files. How can I do it in turbo c++? Do I have to switch to another IDE?
Edited:
I am doing an "E-book management" in c++. After managing the software i wanted to open pdf file through my program and do no access adobe reader or aome other. Sorry for incomplete question.
You can add PDF support to your application with TechSoft's PDF library. Which IDE you use shouldn't matter.
If your intention is to open the PDF for viewing (like you probably do with your PDF viewer, e.g. Acrobat Reader), and not to open the file programmically, you cannot do it in Turbo C++ IDE.
Try opening the IDE in non-full-screen window, and you will be able to see the IDE and the PDF (in the Acrobat Reader) at the same time.
The Poppler library is a C++ library for rendering PDFs to any arbitrary format, whether to screen or image. It's very easy to extend, and I wrote a program for rendering PDFs to a custom image format in about 150 lines, in a little under 5 hours - and most of that work was in exporting the custom image format. A simple renderer came in under 50 lines and took me less than an hour to write.