[solved]Problem with wxMouseEvent

[Sterl]

I've tried to use mouse events but it dosen't work.

Here is samples of my code :

in mypanel.h

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class myPanel : public wxPanel
{
public:
    // class constructor
   myPanel(wxWindow* parent);
   // class destructor
  ~myPanel();
	
   void onMouseDown(wxMouseEvent& event);
private:    
  DECLARE_EVENT_TABLE()
};

in myPanel.ccp

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BEGIN_EVENT_TABLE(myPanel, wxPanel)
   EVT_LEFT_UP(myPanel::onMouseDown)
END_EVENT_TABLE()

void myPanel::onMouseDown(wxMouseEvent& event)
{
  wxMessageDialog msg(NULL,"it works !");
  msg.ShowModal();
}

Is there something wrong?

[T-Rex]

Code: Select all

#include <wx/wx.h>
#include <wx/datetime.h>

class MyApp : public wxApp
{
public:
	virtual bool OnInit();
};

class myPanel : public wxPanel
{
public:
    // class constructor
   myPanel(wxWindow* parent);
   // class destructor
  ~myPanel();       
   void onMouseDown(wxMouseEvent& event);
private:   
  DECLARE_EVENT_TABLE()
}; 

BEGIN_EVENT_TABLE(myPanel, wxPanel)
   EVT_LEFT_UP(myPanel::onMouseDown)
END_EVENT_TABLE()

myPanel::myPanel(wxWindow* parent)
: wxPanel(parent, -1, wxDefaultPosition, wxDefaultSize, wxSIMPLE_BORDER)
{
}

myPanel::~myPanel()
{
}

void myPanel::onMouseDown(wxMouseEvent& event)
{
  wxMessageDialog msg(NULL,"it works !");
  msg.ShowModal();
} 

class MyFrame : public wxFrame
{
public:
	MyFrame(wxWindow * parent);
};

MyFrame::MyFrame(wxWindow * parent)
: wxFrame(parent, -1, "Test", wxPoint(100,100), wxSize(400,300))
{		
	wxBoxSizer * sizer = new wxBoxSizer(wxVERTICAL);
	SetSizer(sizer);
	myPanel * panel = new myPanel(this);
	sizer->Add(panel, 1, wxEXPAND);	
	Centre();
}

IMPLEMENT_APP(MyApp)

bool MyApp::OnInit()
{
	MyFrame * frame = new MyFrame(NULL);	
	frame->Show();	
	SetTopWindow(frame);
	return true;
}

Works perfectly under MSVC .NET 2003

[Sterl]

Ok thanks for the help.

I've understood what was wrong. In fact, i had a wxStaticBitmap added to my panel and i had to put the declaration of the event table in the declaration class of the staticBitmap.

In your example, you define an empty panel with a certain size and that's why that works.

I thauth the event would be propagated to the parent but apparently it is not.

[Sterl]

I've changed my version into wxWidgets 2.6.0 and now the caputre of mouse event does'nt work anymore. I didn't change anything in my code...

Help please !

[T-Rex]

It's strange... the sample above works fine with wxWidgets-2.5.x and 2.6.0
Maybe you have overlapped windows or maybe you missed smth else? Post your code (or upload it somewhere and post the link)... and we'll see what is possible to do.

[Sterl]

here is the code :

ZonexStaticBitmap.h

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#ifndef __ZONEXSTATICBITMAP_H
#define __ZONEXSTATICBITMAP_H

class ZonexStaticBitmap : public wxStaticBitmap
{
	public:
		ZonexStaticBitmap(wxWindow* parent,int iWidth,int iHeight);
		~ZonexStaticBitmap();
		void leftMouseDown(wxMouseEvent& event);
	private:	
	  DECLARE_EVENT_TABLE()
};

#endif // __ZONEXSTATICBITMAP_H

ZonexStaticBitmap.cpp :

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#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif


#ifndef WX_PRECOMP
    #include "wx/wx.h"
#endif

#include "zonexStaticBitmap.h"
#include "mainController.h"

BEGIN_EVENT_TABLE(ZonexStaticBitmap, wxStaticBitmap)
   EVT_LEFT_UP(ZonexStaticBitmap::leftMouseDown)
END_EVENT_TABLE()


ZonexStaticBitmap::ZonexStaticBitmap(wxWindow* parent,int iWidth,int iHeight)
                  : wxStaticBitmap(parent,-1,wxBitmap(iWidth,iHeight))
{
}

ZonexStaticBitmap::~ZonexStaticBitmap()
{
}

void ZonexStaticBitmap::leftMouseDown(wxMouseEvent& event)
{
MainController::GetInstance()->leftMouseDown(event.GetPosition());
}

I've downloaded the devpack 2.6.0 with the version manager of Dev c++ 4.9.9.2.

[Sterl]

Somebody has the same probleme with dev C++ 4.9.9.2 and downloaded devpack 2.6.0 ?

[T-Rex]

Code: Select all

#include <wx/wx.h>

namespace MainController
{

	class wxMainController
	{
	public:		
		void leftMouseDown(wxPoint pt);
	};

	wxMainController * Instance = NULL;

	void CreateInstance() {if(!Instance) Instance = new wxMainController;}
	wxMainController * GetInstance() {return Instance;}
	void DestroyInstance() {if(Instance) delete Instance;}

	void wxMainController::leftMouseDown(wxPoint pt)
	{
		wxMessageBox("wxMainController::leftMouseDown works fine");
	}
}

using namespace MainController;

class ZonexStaticBitmap : public wxStaticBitmap
{
        public:
                ZonexStaticBitmap(wxWindow* parent,int iWidth,int iHeight);
                ~ZonexStaticBitmap();
                void leftMouseDown(wxMouseEvent& event);
        private:       
          DECLARE_EVENT_TABLE()
}; 

BEGIN_EVENT_TABLE(ZonexStaticBitmap, wxStaticBitmap)
   EVT_LEFT_UP(ZonexStaticBitmap::leftMouseDown)
END_EVENT_TABLE()


ZonexStaticBitmap::ZonexStaticBitmap(wxWindow* parent,int iWidth,int iHeight)
                  : wxStaticBitmap(parent,-1,wxBitmap(iWidth,iHeight))
{
	wxMemoryDC dc;
	dc.SelectObject(GetBitmap());
	dc.SetBackground(*wxWHITE_BRUSH);
	dc.Clear();
	dc.SetBrush(wxBrush(wxColour(0,0,127), wxCROSSDIAG_HATCH));
	dc.DrawRectangle(0,0,iWidth, iHeight);
}

ZonexStaticBitmap::~ZonexStaticBitmap()
{
}

void ZonexStaticBitmap::leftMouseDown(wxMouseEvent& event)
{
	wxMessageBox("MouseDown works fine");
	MainController::GetInstance()->leftMouseDown(event.GetPosition());
}

class MyFrame : public wxFrame
{
public:
	MyFrame(wxWindow * parent);
	ZonexStaticBitmap * bitmap;
	DECLARE_EVENT_TABLE()	
};

BEGIN_EVENT_TABLE(MyFrame, wxFrame)
END_EVENT_TABLE()

MyFrame::MyFrame(wxWindow * parent)
: wxFrame(parent, -1, "Test", wxPoint(100,100), wxSize(400,300))
{		
	wxBoxSizer * sizer = new wxBoxSizer(wxVERTICAL);
	SetSizer(sizer);
	bitmap = new ZonexStaticBitmap(this, 400,300);
	sizer->Add(bitmap, 1);	
	Centre();
}

class MyApp : public wxApp
{
public:
	virtual bool OnInit();
	virtual int OnExit();
};

IMPLEMENT_APP(MyApp)

bool MyApp::OnInit()
{
	MainController::CreateInstance();
	MyFrame * frame = new MyFrame(NULL);	
	frame->Show();	
	SetTopWindow(frame);
	return true;
}

int MyApp::OnExit()
{	
	MainController::DestroyInstance();
	return 1;
}

I don't know what is MainController, so I created the namespace with the same name to make the source compatible with your sample.
It works fine with MSVC.NET 2003 and Dev-Cpp 4.9.9.2 - beta 6.7 + wxWidgets 2.6 DevPack

[Sterl]

Thanks for the code. I will analyse it and adapt to my project.
I'll keep you inform if it works....

[Sterl]

Ok i've found the problem. Your code works well. But in my project the ZonexStaticBitmap is placed into a wxStaticBox and the staticBox seems to stop all mouse event. That was not the case with the 2.4.2 devpacks.

Try this code in your exemple and you will see the problem....

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MyFrame::MyFrame(wxWindow * parent)
: wxFrame(parent, -1, "Test", wxPoint(100,100), wxSize(400,300))
{               
  wxStaticBox* zonexStaticBox = new wxStaticBox(this,-1,wxString("Window label"),wxDefaultPosition,wxDefaultSize);
  wxStaticBoxSizer* zonexStaticBoxSizer = new wxStaticBoxSizer(zonexStaticBox,wxHORIZONTAL);
  SetSizer(zonexStaticBoxSizer);
  bitmap = new ZonexStaticBitmap(this, 400,300);
  zonexStaticBoxSizer->Add(bitmap, 1);       
  Centre();
}

do you have a way to solve it ?

[T-Rex]

I looked at the documentation and found this:

Also, please note that because of this, the order in which you create new controls is important. Create your wxStaticBox control before any siblings that are to appear inside the wxStaticBox in order to preserve the correct Z-Order of controls.

But it doesn't work....

But if I create the wxStaticBox after bitmap, everything works fine:

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MyFrame::MyFrame(wxWindow * parent)
: wxFrame(parent, -1, "Test", wxPoint(100,100), wxSize(400,300))
{  
  
  bitmap = new ZonexStaticBitmap(this, 400,300);
  wxStaticBox* zonexStaticBox = new wxStaticBox(this,10001,wxString("Window label"),wxDefaultPosition,wxSize(400,300));
  wxStaticBoxSizer* zonexStaticBoxSizer = new wxStaticBoxSizer(zonexStaticBox,wxHORIZONTAL);
  SetSizer(zonexStaticBoxSizer);  
  zonexStaticBoxSizer->Add(bitmap, 1);         
  Centre();
}

[Sterl]

I've put the staticBitmap declaration before staticSizer one and now it works perfectly. Thanks for the advice.

It may be a bug !