Catching 'enter' in a combo box

[CorsairX]

Hi,
I have a feeling that I'm missing something obvious but I can't figure this out. I have a panel that has 3 text controls and 2 combo boxs and I want to catch 'enter' key from any of these controls. The text control works fine, but for the life of me I cannot catch 'enter' from the two combo boxs.

My desired behavior is this:
Tab key - navigate to next control
Enter key - Process the event

With my code as is; if I set wxTE_PROCESS_ENTER on the combo boxes when I tab through or press enter, they just beep. If I set no style (0); then they tab through correctly but, on enter, also just tab to the next control.

I'd be grateful for any help!

My code is as follows:

Code: Select all

//Header

#ifndef WX_PRECOMP
	#include <wx/wx.h>
	#include <wx/panel.h>
#else
	#include <wx/wxprec.h>
#endif

#include <wx/event.h>
#include <wx/combobox.h>
#include <wx/textctrl.h>
#include <wx/panel.h>
#include <wx/sizer.h>


class pnlTodoItem : public wxPanel
{
public:	   
	pnlTodoItem(todoItem* t_data, wxWindow *parent, wxWindowID id = wxID_ANY, const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize, long style = wxTAB_TRAVERSAL, const wxString &name = wxT("Todo item"));

	virtual ~pnlTodoItem();
		
private:

	//Data
	todoItem* data;
	wxArrayString categoryArray;


	//Callbacks
	void OnEnter(wxCommandEvent& event );

	DECLARE_EVENT_TABLE();

	wxComboBox  *drpStatus;
	wxTextCtrl *inpTodo;
	wxComboBox *drpCategory;
	wxTextCtrl *inpDue;
	wxTextCtrl *inpCreated;
	wxBoxSizer *szRoot;
	
	enum
	{
		ID_INPCREATED = 1004,
		ID_INPDUE = 1005,
		ID_DRPCATEGORY = 1006,
		ID_INPTODO = 1007,
		ID_DRPSTATUS = 1008
	};
	
	void CreateGUIControls();
};

Code: Select all

// Implementation

#include "pnlTodoItem.h"
BEGIN_EVENT_TABLE(pnlTodoItem, wxPanel)
	//Combo
	EVT_TEXT_ENTER(ID_DRPSTATUS, pnlTodoItem::OnEnter)
	EVT_TEXT_ENTER(ID_DRPCATEGORY, pnlTodoItem::OnEnter)

	//Text controls
	EVT_TEXT_ENTER(ID_INPCREATED,	pnlTodoItem::OnEnter)
	EVT_TEXT_ENTER(ID_INPDUE,		pnlTodoItem::OnEnter)
	EVT_TEXT_ENTER(ID_INPTODO,		pnlTodoItem::OnEnter)

	/* 
	//Works fine but with EVT_TEXT_ENTER there seems to be some interaction happening
	EVT_COMBOBOX(ID_DRPCATEGORY,	pnlTodoItem::OnEnter)
	EVT_COMBOBOX(ID_DRPSTATUS,		pnlTodoItem::OnEnter)
	*/
END_EVENT_TABLE()

pnlTodoItem::pnlTodoItem(todoItem* t_data, wxWindow *parent, wxWindowID id, const wxPoint &position, const wxSize& size, long style, const wxString &name)
: wxPanel(parent, id, position, size, style, name)
{
	this->data = t_data;
	CreateGUIControls();
}


pnlTodoItem::~pnlTodoItem()
{
}
void pnlTodoItem::CreateGUIControls()
{
	szRoot = new wxBoxSizer(wxHORIZONTAL);
	this->SetSizer(szRoot);
	this->SetAutoLayout(true);


	
	//Data
	wxArrayString statusStates;
	statusStates.Add(wxT("Open"));
	statusStates.Add(wxT("Done"));


	//Controls
	inpCreated	= new wxTextCtrl(this, ID_INPCREATED, this->data->created, wxPoint(1,1), wxSize(60,21), 
									wxTE_PROCESS_ENTER, wxDefaultValidator, wxT("inpCreated"));
	inpDue		= new wxTextCtrl(this, ID_INPDUE, this->data->required, wxPoint(63,1), wxSize(60,21),
									wxTE_PROCESS_ENTER, wxDefaultValidator, wxT("inpDue"));
	
	//If wxTE_PROCESS_ENTER is set; then combobox beeps on tab and enter; otherwise does nothing
	drpCategory = new wxComboBox (this, ID_DRPCATEGORY,	this->data->category,	wxPoint(125,1), wxSize(102,21),	
								  categoryArray, wxTE_PROCESS_ENTER, wxDefaultValidator, wxT("drpCategory"));

	inpTodo		= new wxTextCtrl(this, ID_INPTODO,this->data->todo, wxPoint(229,1), wxSize(461,21), 
									wxTE_PROCESS_ENTER, wxDefaultValidator, wxT("inpTodo"));
	
	//Ditto drpCategory
	drpStatus	= new wxComboBox (this, ID_DRPSTATUS, this->data->status, wxPoint(692,1), wxSize(87,21),
									statusStates, wxTE_PROCESS_ENTER, wxDefaultValidator, wxT("drpStatus"));

	szRoot->Add(inpCreated,0,	wxALIGN_CENTER | wxALL,	1);
	szRoot->Add(inpDue,0,		wxALIGN_CENTER | wxALL,	1);
	szRoot->Add(drpCategory,0,	wxALIGN_CENTER | wxALL,	1);
	szRoot->Add(inpTodo,0,		wxEXPAND | wxALL,		1);
	szRoot->Add(drpStatus,0,	wxALIGN_CENTER | wxALL,	1);

}
void pnlTodoItem::OnEnter(wxCommandEvent& event )
{
	wxMessageDialog(this, wxT("Got an enter"), wxT("Notice"), wxOK | wxICON_INFORMATION ).ShowModal();
	event.Skip();
}

[CorsairX]

Any takers? I still can't figure this one out.

[metalogic]

Try this:

Code: Select all

myCombo->Connect( wxID_ANY, wxEVT_CHAR, (wxObjectEventFunction) (wxEventFunction) (wxCharEventFunction) &MyFrame::myComboKeyPress, NULL, this );

void MyFrame::myComboKeyPress( wxKeyEvent& event )
{
	if ( event.GetKeyCode() == WXK_RETURN ) DoSomething();

	event.Skip();
}

[Ryan Wilcox]

Or read the wxWidget's source code for the combo box implementation for your platform. Maybe you can find a place and submit a patch enabling it.

[HeReSY]

Set the style wxTE_PROSESS_ENTER for your combobox, but this is only available under windows.

HeReSY

[CorsairX]

Previously, setting wxTE_PROCESS_ENTER would simply cause navigation through the panel to stop; but with metalogic's code I'm now able to intercept key presses, which is better then half the battle!

Interesting stuff.. I'm still playing around with things, when I come up with a solution I'll be sure to post it up. Thanks all for you help so far.

[lester]

I have the same problem - anybody known how process Enter on Mac?

[Auria]

I have the same problem - anybody known how process Enter on Mac?

In whatever text areas where user can type stuff, i have solved this with a ugly but working hack - i just read the text held by the component on each event and store it to be used with next text change event. If a text event is processed but the text is still the same as the text there was in the previous event, then the second is most likely that the user pressed enter. I'm not sure it works on other platforms that wxMac, that will depend if pressing enter generates text events even though the text doesnt actually change.

[lester]

Thanks, i'll try