I have written a small c++ program to read the content of a .XML file.
It works as a console application. But when I compile the project as a .dll it gives no error but ignores the .XML Content.
My question is how to include the .XML file into my .dll
I am using the Code::Blocks IDE. I set the checkmark with options->compile when right-clicking on the .XML file, but this doesn't help. I also tried to include the .XML in my code with
#include <data.xml>
but now I get error Messages. Please help.
I have found a workaround for my problem:
I define the content of my .XML file as a string xml_message and then use
#include "data.xml"
xml_document doc;
doc.loadSring(xml_message.c_str())
instead of
xml_document doc;
doc.loadFile("data.xml");
Related
I'm using Xcode as an IDLE editor of C language. I downloaded an SDK package from a algorithm competition website and compiled it successfully on the terminal, but now I have a need to compile and run the source .cpp file(that inside the SDK packadge) directly by Xcode, so:
Is there a way to replace the CPP source file of command-line-tools project with the CPP source file that I specify the path of it?
Or is there a way to creat a new command-line-tools project from the specified path CPP source file?
I've now Solved this problem through the method one whitch says "Is there a way to replace the CPP source file of command-line-tools project with the CPP source file that I specify the path of it?", but still have no idea about method two.
Just creat a symbolink of CPP source file and right-click the project, add the alias to project. Because the "add" is copy in fact, instead of "import" or "open". Only by copying the alias can the purpose of modifying the source file be achieved.
I am a "very" beginner of OpenCV. I just downloaded it for my Windows and extracted.
I have read this post: http://opencv-srf.blogspot.ro/2011/09/capturing-images-videos.html about how to read webcam and I copied and pasted the code in a C++ file I created in "include" folder of OpenCV extracted archive.
When I try to run the program I get this error: Error in: /opencv/build/include/opencv2/highgui/highgui.hpp - opencv2/highgui.hpp: No such file or directory.
What should I do?
Thank you all!
EDIT
I opened: "/opencv/build/include/opencv2/highgui/highgui.hpp" and I can see that it includes this path "opencv2/highgui.hpp". If I change it to "../highgui.hpp" it works but I get other errors like this for other files... What should I do?
The problem is that you are not supposed to create your "cpp" file in the OpenCV "include" directory. You need to create it in a separate directory and then add OpenCV "include" as additional include directory for the compilation step.
The way to achieve this depends on your C++ development environment. If you are using Visual Studio, then you need to open project property pages, go to "C/C++ -> General" and add the path to OpenCV "include" directory to "Additional Include Directories". In case of some other compiler/IDE, you can find out how to do this by reading the corresponding documentation.
I am working on a project which requires me to open an HTML file and use its contents. I added it to Resource files but when I try to open it lie this:
std::ifstream templateFile;
templateFile.open("filename.html", std::ifstream::in);
The operation fails. I checked it by using templateFile.fail().
The above operation works when I provide the full path. The file lies in the project folder along with other files. I tried setting build action to content but still it doesnt work. Please Help.
Output directory, where your executable is compiled and put into differs from the source directory, where you create all your .cpp/.hpp files (I assume there is filename.html file). Local path filename.html is supposed to be local for your executable file, not the source file.
Read more about changing the output directory here: https://msdn.microsoft.com/en-us/library/ms165410.aspx
Under Configuration Properties / Debugging, see what your Working Directory is using the macros dialog box. Move your file into this folder.
Click the button shown in the figure. There, click either Edit or Browse. Browse will take you to the working directory. Edit will expose the link to open the macros box
I have problem with storing a path to file in Windows in a QString. I'm using Qt with C++.
QString resourcePath = ":/images/frog.bmp";
if( ! QFile::exists(resourcePath) )
{
qDebug("*** Error - Resource path not found : %s", resourcePath.data());
}
This code results with this:
*** Error - Resource path not found : :
So I can see that resourcePath.data()) contains just ":". I assumed that the problem is with slashes, so I tried changing "/" with "\" but the result is the same.
But if I write:
QString resourcePath = "C:\\Users\\Boris\\Desktop\\Frogger3\\images\\frog.bmp";
everything works just fine. What am I missing? Is there a reason why colon cant be the first sign in QString? How should I write path to the file in the same folder as the code?
Thanks in advance!
The style of resource path you are using is implying that the file frog.bmp is in a resource file. So either you need to resolve the path of the bmp file at run-time, or you need to add a resource file to your project.
If you use the UI designer the concept of resource files is handled automatically, but if you want to access resources through code there are a few things you need to do.
First create a resource file. In visual studios (with the visual studios add-in) there is a wizard to do this. Essentially it is just an xml file with the extension .qrc looking something like this:
<RCC>
<qresource prefix="/images">
<file>frogger.bmp</file>
</qresource>
</RCC>
Now this file has to be processed during the build. If you have used .ui files, it is similar. There is a tool called "rcc.exe" that takes the qrc file as an input and generates a .cpp file that needs to be compiled and linked with your project.
If you are using visual studios and have the Qt Visual Studios Plugin, this should all be handled for you when you add the qrc file to the project.
If you are using QMake then your pri file should contain a "RESOURCES" section where you need to list your qrc file something like:
RESOURCES += yourqrcfile.qrc
Now, once that is done. You can access your resources in code. Your call to QFile::exists should resolve the file name.
In the case where you put your resources in a static or shared library, you will need to add the following line to your class to ensure that the resource file is loaded.
Q_INIT_RESOURCE(yourqrcfile); // do not include the extension, just the name of the file.
Here are a few links that explain things in more detail:
Creating a resource file in Qt Creator
Explaining how resource files work
Ive made a project (copied actually, but its from an old project hugely out of date that doesnt compile anymore). Its a MFC project. In the .rc file there is an include to two files that are also used in the normal code itself. The problem is that when i compile, in the .rc file I get an error returned saying it cant find either file.
The .rc file and the main project are in different folders but the number of folders is the same. So the directory structure is:
ManagerDir->ManagerProj
ManagerDir->ManagerProj.rc
In my additional dependencies i have a path to the folder where the files it cant find are. That works for the project code. In the .rc file if i give the long, ..\..\Dir1\subDir\.., path the include works. The problem is that the same thing is happening with further includes so this seems to be a symptom and not the problem.
I tried moving the rc script from where it is now to put it in the same folder as the project code but it re-writes the rc script when i do this.
Anyone know what might be happening?