I'm trying to embed mono in a c++ executable, and mono crashes on Assembly.GetExecutingAssembly. Any idea of what I missed ?
EDIT : using mono 3.0.3
EmbeddedMonoTest.cpp :
// EmbeddedMonoTest.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <mono/metadata/debug-helpers.h>
#include <mono/metadata/exception.h>
#include <mono/jit/jit.h>
#include <mono/metadata/assembly.h>
int _tmain(int argc, _TCHAR* argv[])
{
MonoDomain* domain = mono_jit_init_version ("ClassLibrary1", "v4.0.30319");
MonoAssembly* _assembly_fbmonoengine = mono_domain_assembly_open (domain, "ClassLibrary1.dll");
MonoImage* _image_fbmonoengine = mono_assembly_get_image (_assembly_fbmonoengine);
MonoClass* klass = mono_class_from_name(_image_fbmonoengine, "ClassLibrary1", "Class1");
MonoMethod* test = mono_class_get_method_from_name(klass, "Test" , 0);
mono_runtime_invoke(test, NULL, NULL, NULL);
return 0;
}
Class1.cs :
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Reflection;
namespace ClassLibrary1
{
public class Class1
{
public static void Test()
{
Assembly.GetExecutingAssembly();
}
}
}
The error :
Unhandled exception at 0x65ad2148 in EmbeddedMonoTest.exe: 0xC0000005: Access violation reading location 0x`00000008.
You're not executing any assembly in your program, so ExecutingAssembly in that context has no meaning (a better error is needed, though).
You need to provide the usual static Main() entry point in the assembly and execute it with mono_runtime_exec_main().
Related
I use windows 7 and VS2010. I write a piece of C++/CLI code to do measurements, during which I want to make screenshot.
I have tried screenshot method in C++ (using GDI library), but failed to compile the file.
So I suppose the GDI library could not be used in C++/CLI.
How to do screenshot and paste to a word in C++/CLI project?
Here is the code:
#include "stdafx.h"
using namespace System;
using namespace System::IO;
int main(array<System::String ^> ^args)
{
String^ fileName = "AP_result.doc";
StreamWriter^ sw = gcnew StreamWriter(fileName);
...
sw->Close();
return 0;
}
I have tried Slawomir Orlowski's method but error occurs:
error
C++/CLI code for screen shot:
using namespace System;
using namespace System::Windows;
using namespace System::Windows::Forms;
using namespace System::Drawing;
using namespace System::Drawing::Imaging;
int main(array<System::String ^> ^args)
{
Screen^ r = System::Windows::Forms::Screen::PrimaryScreen;
int width = r->Bounds.Width;
int height = r->Bounds.Height;
Bitmap^ bmp = gcnew Bitmap(width, height, PixelFormat::Format32bppArgb);
Graphics^ screen = Graphics::FromImage(bmp);
screen->CopyFromScreen(0,0,0,0, Size(width, height), CopyPixelOperation::SourceCopy);
bmp->Save("screenshot.bmp");
return 0;
}
In your project you have to add few references: System.Drawing, System.Windows, System.Windows.Forms.
As explained here
https://stackoverflow.com/a/3291411
you need to get context of screen, then put it in bitmap file, it's better explained in answer above, so check answers and comments
I want to load class of an application with MFC project and use them for software automation.The project type is MFC application my compiler is visual studio 2012 . I loaded class from typelib wizard. whole of my code is:
my code is :
#include "stdafx.h"
#include "MFCApplication1.h"
#include "CGPNSApplicationDisp.h"
#include "ChildFrm.h"
#include <iostream>
#include <string>
void CChildFrame::AssertValid() const
{
CLSID clsid;
LPDISPATCH pWMPDispatch = NULL;
::CLSIDFromProgID(OLESTR("SGNSAutomation.SGNSApplication"), &clsid);
IID iid;
HRESULT hr = CoCreateInstance(clsid, NULL, CLSCTX_ALL,
IID_IDispatch, (LPVOID*)&pWMPDispatch);//creating base class of application
CGPNSApplicationDisp *GPNSApplication1;
hr=pWMPDispatch->QueryInterface(__uuidof(IGPNSApplicationDisp),
(void**)&GPNSApplication1);
LPDISPATCH myNet = NULL;
myNet=GPNSApplication1->addSimulationCase();//error occured here
ISimulationCaseDisp* mysym= NULL;
mysym=GPNSApplication1->openCase(myfile.c_str());*/
CMDIChildWndEx::AssertValid();
}
list of method for CGPNSApplicaionDisp:
addSimulationCase()
getSimulationCase(file path)
importCase(file path)
openCase(file path)
an error occurred when the program want to invoke this method in the oledisp2.cpp
in the line :
SCODE sc = m_lpDispatch->Invoke(dwDispID, IID_NULL, 0, wFlags,
&dispparams, pvarResult, &excepInfo, &nArgErr);
error is Unhandled exception at 0x0FB3F03A (mfc110ud.dll) in MFCApplication1.exe: 0xC0000005: Access violation reading location 0x00000002.
I am not a professional in MFC project and COM interface.
Please help me.
Thank You.
Trying to translate to cppwinrt the StorageFolder method GetFilesAsync I'm unable to get past compiler link errors. Here is a very simple routine to test the concept:
#include "winrt/Windows.Storage.h"
#include "winrt/Windows.Foundation.Collections.h"
IAsyncAction TestClass::LoadFiles()
{
StorageFolder appFolder = Windows::ApplicationModel::Package::Current().InstalledLocation();
StorageFolder assetsFolder = co_await appFolder.GetFolderAsync(hstring(L"Assets"));
auto files = co_await assetsFolder.GetFilesAsync(CommonFileQuery::DefaultQuery);
}
The problem seems to lie in the return type for GetFilesAsync. I've tried various types for that, e.g. IVectorView, but nothing seems to work. Does anyone know of a code example showing how this enumeration might be accomplished in C++/winrt?
[UPDATE] Returning to this project with SDK 10.0.17666 and VS 15.9.0 Preview 3 I find that the solution adopted earlier from these answers no longer works. This time I will be sure to include the full error to see if anyone has ideas. For simplicity I'll use just the simple code provided by IInspectable, altered only to make it a class member in my ResourceManager class:
#include "winrt/Windows.ApplicationModel.h"
#include "winrt/Windows.Storage.h"
#include "winrt/Windows.Storage.Streams.h"
#include "winrt/Windows.Foundation.Collections.h"
#include "winrt/Windows.Storage.Search.h"
#include "winrt/Windows.UI.Core.h"
#include "pch.h"
using namespace winrt;
using namespace Windows::Foundation;
using namespace Windows::Storage;
using namespace Windows::Storage::Search;
IAsyncAction ResourceManager::LoadActivities()
{
StorageFolder appFolder = Windows::ApplicationModel::Package::Current().InstalledLocation();
StorageFolder assetsFolder = co_await appFolder.GetFolderAsync(L"Activities");
auto files = co_await assetsFolder.GetFilesAsync(CommonFileQuery::DefaultQuery);
}
The call to GetFilesAsync now produces the following link error:
Severity Code Description Project File Line Suppression State
Error LNK2019 unresolved external symbol "public: struct winrt::Windows::Foundation::IAsyncOperation > __thiscall winrt::impl::consume_Windows_Storage_Search_IStorageFolderQueryOperations::GetFilesAsync(enum winrt::Windows::Storage::Search::CommonFileQuery const &)const " (?GetFilesAsync#?$consume_Windows_Storage_Search_IStorageFolderQueryOperations#UStorageFolder#Storage#Windows#winrt###impl#winrt##QBE?AU?$IAsyncOperation#U?$IVectorView#UStorageFile#Storage#Windows#winrt###Collections#Foundation#Windows#winrt###Foundation#Windows#3#ABW4CommonFileQuery#Search#Storage#63##Z) referenced in function "public: struct winrt::Windows::Foundation::IAsyncAction __thiscall AppEngine::ResourceManager::LoadActivities$_ResumeCoro$2(void)" (?LoadActivities$_ResumeCoro$2#ResourceManager#AppEngine##QAE?AUIAsyncAction#Foundation#Windows#winrt##XZ)
(followed by the path to the object file)
I have to admit I find that error message hard to decipher. Perhaps someone else here will have an idea? Must be something that changed in recent system updates.
For what it's worth, the following standalone code builds just fine. So you're probably either missing a #include or a link library, but it's impossible to tell when you don't share important information like what actual error(s) you're seeing.
#pragma comment(lib, "WindowsApp")
#include <winrt/Windows.ApplicationModel.h>
#include <winrt/Windows.Foundation.Collections.h>
#include <winrt/Windows.Storage.h>
#include <winrt/Windows.Storage.Search.h>
using namespace winrt;
using namespace Windows::Foundation;
using namespace Windows::Storage;
using namespace Windows::Storage::Search;
IAsyncAction LoadFiles()
{
StorageFolder appFolder = Windows::ApplicationModel::Package::Current().InstalledLocation();
StorageFolder assetsFolder = co_await appFolder.GetFolderAsync(L"Assets");
auto files = co_await assetsFolder.GetFilesAsync(CommonFileQuery::DefaultQuery);
}
int main()
{
LoadFiles().get();
}
I have C++/CLI console application that uses direct sound. I am unsure if directsound is a problem or not, but after Windows 10 update application hangs before even launching. To reproduce this problem please create C++/CLI console application, link it against dsound.lib and copy paste this code into main file. You will notice that it unhangs as soon as DirectSoundEnumerate is commented.
#include "stdafx.h"
#include <vector>
#include <Windows.h>
#include <dsound.h>
using namespace System;
using namespace System::Collections::Generic;
static BOOL CALLBACK DSEnumOutputProc(LPGUID lpGUID,
LPCWSTR lpszDesc,
LPCWSTR lpszDrvName,
LPVOID lpContext)
{
return(TRUE);
}
void EnumerateDirectSoundDevices()
{
if (SUCCEEDED(DirectSoundEnumerate(&DSEnumOutputProc, LPVOID(NULL))))
{
printf("output devices enumerated.\n");
}
}
int main(array<System::String ^> ^args)
{
Console::WriteLine(L"Hello World");
return 0;
}
I'm currently using Visual Studio C++ to generate .dll in order to transmit data between two programs: essentially, one program notifies the other when an event occurs. I'm trying to do this via a TcP client socket.
my header file goes something like this:
#include <string>
using namespace std;
extern "C"
{
__declspec (dllexport) bool trackerConnect( char* ipAddress, int port );
__declspec (dllexport) void sendEvent ( char* ev);
__declspec (dllexport) void disconnect();
}
My .cpp file looks something like this
#define WIN32_LEAN_AND_MEAN
#include "logEvents.h"
#using "system.dll"
using namespace System;
using namespace System::Net;
using namespace System::Net::Sockets;
using namespace System::Text;
TcpClient^ logClient;
NetworkStream^ logStream;
bool trackerConnect( char* ipAddress, int port )
{
/*Connects to server, gets stream, and returns whether the connection was
successful or not*/
}
void sendEvent ( char* ev )
{
/*Converts ev into a Byte array and sends it to the server to notify it
that an event has occurred*/
}
void disconnect ()
{
//closes the connection with the server
}
Given that all three functions need access to the TcPClient, I declared it as a global variable. However, when I compile, I get error C3145: global or static variable may not have managed type. If I can't declare the TcPClient as a global variable, how am I supposed to use it in the three functions?