I want to create an excel file inside of my C++ project, I would use C# but because of other restraints I have to use C++.
When I go to create a new application like this:
#define excel Microsoft::Office::Interop::Excel
excel::Application^ exlFile = gcnew excel::Application;
it underlines excel::Application in red and say:
Cannot create an object of a CLI interface class
Am I doing something wrong, or is there no way to create a full application inside of C++/cli? If I am doing something wrong will you please let me know? If you need more information please let me know.
Using VS 2012
#using <Microsoft.Office.Interop.Excel.dll>
Try using Excel::Application^ xl = gcnew Excel::ApplicationClass() instead.
Related
I supposed to using the cocos2dx + C++ to do the most job in application, and use lua to some ui part job.
And here is a question:
In bool AppDelegate::applicationDidFinishLaunching(): I using this codes to config the design screen size
glview->setDesignResolutionSize(designResolutionSize.width, designResolutionSize.height, ResolutionPolicy::NO_BORDER);
But what will happen if I change the config in config.lua.
CONFIG_SCREEN_ORIENTATION = "landscape"
-- design resolution
CONFIG_SCREEN_WIDTH = 960
CONFIG_SCREEN_HEIGHT = 640
-- auto scale mode
CONFIG_SCREEN_AUTOSCALE = "FIXED_HEIGHT"
Is there any solution can resolve the config issue if I am using c++ and lua?
Finally, after some test, I found a way to resolve it.
The c++ codes only work in the c++ enviroment, and the lua config only works in the lua enviroment, so we have to let the properties of them be same.
I'm trying to launch an image using WinRT API WIndows::System::Launcher::LaunchFileAsync().
Code snippet is as follows:
RoInitialize(RO_INIT_MULTITHREADED);
String^ imagePath = ref new String(L"C:\\Users\\GoodMan\\Pictures\\wood.png");
auto file = Storage::StorageFile::GetFileFromPathAsync(imagePath);
Windows::System::Launcher::LaunchFileAsync(file);
I'm getting this error from the LaunchFileAsync() API:
error C2665: 'Windows::System::Launcher::LaunchFileAsync' : none of
the 2 overloads could convert all the argument types
Can I please get help how to solve this. I'm very new to WinRT C++ coding .
The method GetFileFromPathAsync does not return a StorageFile, but it returns IAsyncOperation<StorageFile>^. What you have to do is convert the latter to the former, as follows:
using namespace concurrency;
String^ imagePath = ref new String(L"C:\\Users\\GoodMan\\Pictures\\wood.png");
auto task = create_task(Windows::Storage::StorageFile::GetFileFromPathAsync(imagePath));
task.then([this](Windows::Storage::StorageFile^ file)
{
Windows::System::Launcher::LaunchFileAsync(file);
});
Generally all Windows Store app framework methods that end in Async will return either an IAsyncOperation, or a task. These methods are what are known as asynchronous methods, and require some special handling. See this article for more info: Asynchronous programming in C++ .
So now everything is great, correct? Well, not quite. There is another issue with your code. It is that when you run the code above, you will get an access-denied error. The reason is that Windows Store Apps are sandboxed, and you cannot generally access just any file on the filesystem.
You are in luck, though, because you are trying to access a file in your Pictures folder. The Pictures folder is a special folder that Windows Store apps have access to. You can get at it using the KnownFolders class:
using namespace concurrency;
Windows::Storage::StorageFolder^ pictures =
Windows::Storage::KnownFolders::PicturesLibrary;
auto task = create_task(pictures->GetFileAsync("wood.png"));
task.then([this](Windows::Storage::StorageFile^ file)
{
Windows::System::Launcher::LaunchFileAsync(file);
});
Note that in order to access the Pictures folder your application has to declare it in the project manifest. To do so, double click on the Package.appmanifest file in the project "tree" in Visual Studio, and select the Capabilities tab. Then under Capabilities, check Pictures Library.
I'm looking for a simple example code for C++\IronPython integration, i.e. embedding python code inside a C++, or better yet, Visual C++ program.
The example code should include: how to share objects between the languages, how to call functions\methods back and forth etc...
Also, an explicit setup procedure would help too. (How to include the Python runtime dll in Visual Studio etc...)
I've found a nice example for C#\IronPython here, but couldn't find C++\IronPython example code.
UPDATE - I've written a more generic example (plus a link to a zip file containing the entire VS2008 project) as entry on my blog here.
Sorry, I am so late to the game, but here is how I have integrated IronPython into a C++/cli app in Visual Studio 2008 - .net 3.5. (actually mixed mode app with C/C++)
I write add-ons for a map making applicaiton written in Assembly. The API is exposed so that C/C++ add-ons can be written. I mix C/C++ with C++/cli. Some of the elements from this example are from the API (such as XPCALL and CmdEnd() - please just ignore them)
///////////////////////////////////////////////////////////////////////
void XPCALL PythonCmd2(int Result, int Result1, int Result2)
{
if(Result==X_OK)
{
try
{
String^ filename = gcnew String(txtFileName);
String^ path = Assembly::GetExecutingAssembly()->Location;
ScriptEngine^ engine = Python::CreateEngine();
ScriptScope^ scope = engine->CreateScope();
ScriptSource^ source = engine->CreateScriptSourceFromFile(String::Concat(Path::GetDirectoryName(path), "\\scripts\\", filename + ".py"));
scope->SetVariable("DrawingList", DynamicHelpers::GetPythonTypeFromType(AddIn::DrawingList::typeid));
scope->SetVariable("DrawingElement", DynamicHelpers::GetPythonTypeFromType(AddIn::DrawingElement::typeid));
scope->SetVariable("DrawingPath", DynamicHelpers::GetPythonTypeFromType(AddIn::DrawingPath::typeid));
scope->SetVariable("Node", DynamicHelpers::GetPythonTypeFromType(AddIn::Node::typeid));
source->Execute(scope);
}
catch(Exception ^e)
{
Console::WriteLine(e->ToString());
CmdEnd();
}
}
else
{
CmdEnd();
}
}
///////////////////////////////////////////////////////////////////////////////
As you can see, I expose to IronPython some objects (DrawingList, DrawingElement, DrawingPath & Node). These objects are C++/cli objects that I created to expose "things" to IronPython.
When the C++/cli source->Execute(scope) line is called, the only python line
to run is the DrawingList.RequestData.
RequestData takes a delegate and a data type.
When the C++/cli code is done, it calls the delegate pointing to the
function "diamond"
In the function diamond it retrieves the requested data with the call to
DrawingList.RequestedValue() The call to DrawingList.AddElement(dp) adds the
new element to the Applications visual Database.
And lastly the call to DrawingList.EndCommand() tells the FastCAD engine to
clean up and end the running of the plugin.
import clr
def diamond(Result1, Result2, Result3):
if(Result1 == 0):
dp = DrawingPath()
dp.drawingStuff.EntityColor = 2
dp.drawingStuff.SecondEntityColor = 2
n = DrawingList.RequestedValue()
dp.Nodes.Add(Node(n.X-50,n.Y+25))
dp.Nodes.Add(Node(n.X-25,n.Y+50))
dp.Nodes.Add(Node(n.X+25,n.Y+50))
dp.Nodes.Add(Node(n.X+50,n.Y+25))
dp.Nodes.Add(Node(n.X,n.Y-40))
DrawingList.AddElement(dp)
DrawingList.EndCommand()
DrawingList.RequestData(diamond, DrawingList.RequestType.PointType)
I hope this is what you were looking for.
If you don't need .NET functionality, you could rely on embedding Python instead of IronPython. See Python's documentation on Embedding Python in Another Application for more info and an example. If you don't mind being dependent on BOOST, you could try out its Python integration library.
Can I convert my VB code to C++? How can I do it?
This is my VB code:
Dim OpenFileDialog1 As New OpenFileDialog
With OpenFileDialog1
.CheckFileExists = True
.ShowReadOnly = False
.Filter = "All Files|*.*|Bitmap Files (*)|*.bmp;*.gif;*.jpg"
.FilterIndex = 2
If .ShowDialog = DialogResult.OK Then
' Load the specified file into a PictureBox control.
PictureBox1.Image = Image.FromFile(.FileName)
End If
End With
Well you can convert it to C++, and using a graphical library might be the easiest way to do so.
I recommend using Qt. It is a fairly simple graphical framework which works on several platforms. We currently don't know which platform you target, however I assume you're targeting Windows since you showed an example in Visual Basic.
Typically, using Qt classes QFileDialog and QPicture, you should be able to achieve your goal quite quick.
The framework is shipped with a whole set of simple examples. One of them is exactly what you ask.
Here is an MSDN-Example for an OpenFileDialog using the WinAPI.
I'm trying to set the text of a textfield using the Carbon API like this:
ControlID editId = {'EDIT', 3};
ControlRef ctrl;
GetControlByID(GetWindowRef(), &editId, &ctrl);
CFStringRef title = CFSTR("Test");
OSErr er = SetControlData(ctrl, kControlEntireControl, kControlEditTextTextTag, CFStringGetLength(title), title);
CFRelease(title);
I'm using the C++ code template of XCode, so GetWindowRef() is a call to the predefined TWindow class. The OSErr return value gives me noErr, but my textfield only contains garbage.
It doesn't matter if I set the attribute of my textfield to Unicode or not.
Any ideas what is wrong here?
What does the GetControlID(...) return? Is it noErr?
As a ControlRef is also a HIViewRef, you can also use the function:
HIViewSetText to set the text. This is documented to work with functions that accept kControlEditTextCFStringTag.
By the way, the line you wrote:
CFRelease(title);
Will cause problems. One should only release objects that have been made using functions that have Create or Copy in the API name. You'll want to read: "Introduction to Memory Management Programming Guide for Core Foundation" -- search in the Xcode documentation.
Finally this did the trick:
SetControlData(ctrl, kControlEditTextPart, kControlStaticTextCFStringTag, sizeof(title), &title);
Since this seems to be very old API, a better way seems to be:
HIViewSetText(ctrl, title);
Thx to Lyndsey for the hints.