Attaching a console or writing output to console Topic is solved

[purplex88]

Is it possible to have/attach/create a console window just like we can have a frame window for output without setting the preference

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Console (/SUBSYSTEM:CONSOLE)

in Visual Studio?

[doublemax]

If you just want a window for logging information, use wxLogWindow:
http://docs.wxwidgets.org/trunk/classwx_log_window.html

If you need this to create a "hybrid" application that works both as GUI and console application, there is no easy way. Maybe this helps:
http://comp.soft-sys.wxwindows.narkive. ... th-console

[purplex88]

Can it be used as main or top window of program something like this:

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// For compilers that support precompilation, includes "wx/wx.h".
#include <wx/wxprec.h>
#ifndef WX_PRECOMP
#include <wx/wx.h>
#endif

// Declare the application class
// It derives from wxApp class.
class MyApp: public wxApp
{
	public:
	 // Called on application startup
	virtual bool OnInit();
};

// Declare our main frame class
class MyFrame: public wxFrame
{

public:
	// Constructor
	MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);

private:
};

// Give wxWidgets the means to create a MyApp object.
// The use of this allows wxWidgets to dynamically create an instance of the
// application object at the appropriate point in wxWidgets initialization.
wxIMPLEMENT_APP(MyApp);

// A wxWidgets application does not have a main procedure; the equivalent is the
// wxApp::OnInit member defined for a class derived from wxApp.
bool MyApp::OnInit()
{
	wxLogWindow *log_window = new wxLogWindow(NULL, "Log Window", TRUE, TRUE);

	// Doesn't work
	log_window->LogText("Hello World\n");
	
	// Start the event loop
	return true;
}

MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
: wxFrame(NULL, wxID_ANY, title, pos, size)
{
	
}

It has a few problems:

• The process doesn't end after I click to close log window.
  It doesn't add the text to log window
  It just disappears after I take any action with it.

[PB]

I think you might have misunderstood how to use wxWidgets logging framework (i.e. use wxLog* function family, not methods of wxLog classes directly). I would recommend reading wxWidgets Logging Overview first, to see how it is supposed to be used and if it does what you need.

If you can't make wxLogWindow work as the main and only frame of your application (it is supposed to be a background window in an application with a main frame), you can use wxLogTextCtrl with any wxTextCtrl control embedded in a frame of your choice, e.g. something like this

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#include <wx/wx.h>

class MyLogFrame : public wxFrame
{
public:
    MyLogFrame()
        : wxFrame(NULL, wxID_ANY, _("Test"))
    {        
        wxBoxSizer* sizer = new wxBoxSizer(wxVERTICAL);

        wxTextCtrl* logText = new wxTextCtrl(this, wxID_ANY, wxEmptyString, 
            wxDefaultPosition, wxSize(600, 300), wxTE_MULTILINE|wxTE_READONLY);
        
        sizer->Add(logText, 1, wxEXPAND, 5);        
        SetSizer(sizer);
        
        wxLog::SetActiveTarget(new wxLogTextCtrl(logText));
    }	
};


class MyApp : public wxApp
{
public:	
	virtual bool OnInit()
	{
        (new MyLogFrame())->Show();

        wxLogWarning("warning");
        wxLogMessage("message");
        wxLogError("error");        

        return true;
	}
};
IMPLEMENT_APP(MyApp)

Or perhaps you can utilize wxStreamToTextRedirector instead of wxLogTextCtrl and use cout instead of wxLog* for the "console output" just as you would do in a bare C++ console app.

[pete_b]

I know this is an old thread but I was looking for a way to output to the console when registering COM automation interface under Windows.
Use attachConsole before writing to stdout/stderr. Its not ideal - the prompt disappears because the console does not wait for the process to finish (but pressing 'enter' shows it).
Probably the only real way to do this is to have a wrapper executable with subsystem:console.

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void App::attachConsole()
{
	if (attached_console_) {
		return;
	}
#ifdef _WIN32
	if (AttachConsole(ATTACH_PARENT_PROCESS)) {
		attached_console_ = true;
		freopen("CONOUT$", "w", stdout);
		freopen("CONOUT$", "w", stderr);
	}
#endif
}

[paddle]

I know this is a very old thread. But for reference for future readers.

If using Code::Blocks it's possible to have the console along the app.
Go to :
project/properties/Build Targets
There is an dropdown option for "type" if you select console application and rebuild, you will have the app run with the console attached.