Dialog with aspect ration won't resize (win32/mingw)

[3rdshift comcast net]

Hi,

I am in a process of porting some gtkmm-based code to windows xp. Under linux, a piece of code that enforces the height/width ratio on a dialog works flawlessly. Under Windows, however, the same code would not let the user to resize the dialog. I included the modified stock dialog example to illustrate the point.

System vitals:

OS:            win xp
Env:           mingw/msys
gtk+-2.0:    2.8.14
gtkmm-2.4: 2.8.4


Any ideas or hints would hightly appreciated.

thanks,
-Vlad

P.S. I am also looking for a Gtkmm-based project that compiles and works well on both platforms.


You can compile the code example, start the program and click on 'Interactive Dialog' button. The popup dialog would not let you resize it.

% g++ -g `pkg-config gtkmm-2.4 --cflags` -c dialog-aspect.cpp
% g++ -g `pkg-config gtkmm-2.4 --cflags` dialog-aspect.o -o dialog-aspect `pkg-config gtkmm-2.4 --libs`


---v--- Start   ----v---

/* Dialog and Message Boxes - with aspect ratio.
 *
 * Dialog widgets are used to pop up a transient window for user feedback.
 */

#include "gtkmm.h"
#include "gtk/gtkstock.h"
#include "stdio.h"

class Example_Dialog : public Gtk::Window
{
public:
  Example_Dialog();
  virtual ~Example_Dialog();

protected:
  //Signal handlers:
  virtual void on_button_message();
  virtual void on_button_interactive();

  //Member widgets:
  Gtk::Frame m_Frame;
  Gtk::VBox m_VBox, m_VBox2;
  Gtk::HBox m_HBox, m_HBox2;
  Gtk::Button m_Button_Message, m_Button_Interactive;
  Gtk::Table m_Table;
  Gtk::Label m_Label1, m_Label2;
  Gtk::Entry m_Entry1, m_Entry2;

  gint m_count;
};

class Dialog_Interactive : public Gtk::Dialog
{
public:
  Dialog_Interactive(Gtk::Window& parent, const Glib::ustring& entry1, const Glib::ustring& entry2);
  virtual ~Dialog_Interactive();

  Glib::ustring get_entry1() const;
  Glib::ustring get_entry2() const;

protected:
  //Member widgets:
  Gtk::HBox m_HBox;
  Gtk::Table m_Table;
  Gtk::Label m_Label1, m_Label2;
  Gtk::Entry m_Entry1, m_Entry2;
  Gtk::Image m_Image;
};



//Called by DemoWindow;
Gtk::Window* do_dialog()
{
  return new Example_Dialog();
}

Example_Dialog::Example_Dialog()
: m_Frame("Dialogs"),
  m_VBox(false, 8),
  m_HBox(false, 8), m_HBox2(false, 8),
  m_Button_Message("_Message Dialog", true), m_Button_Interactive("_Interactive Dialog", true),
  m_Table(2, 2, false),
  m_Label1("_Entry 1", true), m_Label2("E_ntry 2")
{
  m_count = 0;

  set_title("Dialogs");
  set_border_width(8);

  add(m_Frame);

  m_VBox.set_border_width(8);
  m_Frame.add(m_VBox);


  /* Standard message dialog */
  m_VBox.pack_start(m_HBox, Gtk::PACK_SHRINK);
  m_Button_Message.signal_clicked().connect(sigc::mem_fun(*this, &Example_Dialog::on_button_message));
  m_HBox.pack_start(m_Button_Message, Gtk::PACK_SHRINK);
  m_VBox.pack_start(*(Gtk::manage(new Gtk::HSeparator())), Gtk::PACK_SHRINK);


  /* Interactive dialog*/
  m_VBox.pack_start(m_HBox2, Gtk::PACK_SHRINK);
  m_Button_Interactive.signal_clicked().connect(sigc::mem_fun(*this, &Example_Dialog::on_button_interactive));
  m_HBox2.pack_start(m_VBox2, Gtk::PACK_SHRINK);
  m_VBox2.pack_start(m_Button_Interactive, Gtk::PACK_SHRINK);


  m_Table.set_row_spacings(4);
  m_Table.set_col_spacings(4);
  m_HBox2.pack_start(m_Table, Gtk::PACK_SHRINK);

  m_Table.attach(m_Label1, 0, 1, 0, 1);
  m_Table.attach(m_Entry1, 1, 2, 0, 1);
  m_Label1.set_mnemonic_widget(m_Entry1);

  m_Table.attach(m_Label2, 0, 1, 1, 2);
  m_Table.attach(m_Entry2, 1, 2, 1, 2);
  m_Label2.set_mnemonic_widget(m_Entry2);

  show_all();
}

Example_Dialog::~Example_Dialog()
{
}

void Example_Dialog::on_button_message()
{
  Glib::ustring strMessage = "This message box has been popped up the following\n"
                             "number of times:\n\n";
  {
    Glib::ScopedPtr<char> buf (g_strdup_printf("%d", m_count));
    strMessage += buf.get();
  }
  Gtk::MessageDialog dialog(strMessage, false, Gtk::MESSAGE_INFO, Gtk::BUTTONS_OK, true); //true = modal
  /*int response =*/ dialog.run();

  m_count++;
}

void Example_Dialog::on_button_interactive()
{
  Dialog_Interactive* pDialog = new Dialog_Interactive(*this, m_Entry1.get_text(), m_Entry2.get_text());
  /*int response =*/ pDialog->run();
  m_Entry1.set_text(pDialog->get_entry1());
  m_Entry2.set_text(pDialog->get_entry2());
  delete pDialog;
}


Dialog_Interactive::Dialog_Interactive(Gtk::Window& parent, const Glib::ustring& entry1, const Glib::ustring& entry2)
: Gtk::Dialog("Interactive Dialog", parent, true),
  m_HBox(false, 8),
  m_Table(2, 2, false),
  m_Label1("_Entry 1", true), m_Label2("E_ntry 2", true),
  m_Image(Gtk::Stock::DIALOG_QUESTION, Gtk::ICON_SIZE_DIALOG)
{

	add_button(Gtk::Stock::OK, Gtk::RESPONSE_OK);
	add_button("_Non-stock Button", Gtk::RESPONSE_CANCEL);

	m_HBox.set_border_width(8);
	get_vbox()->pack_start(m_HBox, Gtk::PACK_SHRINK);
	m_HBox.pack_start(m_Image, Gtk::PACK_SHRINK);

	m_Table.set_row_spacings(4);
	m_Table.set_col_spacings(4);
	m_HBox.pack_start(m_Table);

	m_Table.attach(m_Label1, 0, 1, 0, 1);
	m_Entry1.set_text(entry1);
	m_Table.attach(m_Entry1, 1, 2, 0, 1);
	m_Label1.set_mnemonic_widget(m_Entry1);

	m_Table.attach(m_Label2, 0, 1, 1, 2);
	m_Entry2.set_text(entry2);
	m_Table.attach(m_Entry2,  1, 2, 1, 2);
	m_Label2.set_mnemonic_widget(m_Entry2);

	/****************************************************
	 * CHANGE STARTS HERE
	 */
	// Enforce 3x5 ratio

	gint width  = 610;
	gint height = 366;
	gdouble aspect = width * 1.0 / height;

	Gdk::Geometry answer_box_geometry = { 
		width,/*min_width*/ height, /*min_height*/
		-1,	/* max_width; */	-1,	/* max_height  */
		-1,	/* base_width */	-1,	/* base_height */
		-1,	/* width_inc  */	-1,	/* height_inc  */
		aspect,	                    /* min_aspect (width/height) */
		aspect	                    /* max_aspect (width/height) */
		};

	set_geometry_hints (*this, answer_box_geometry, 
						Gdk::HINT_ASPECT | Gdk::HINT_MIN_SIZE);
	set_resizable (true);
	set_size_request (width, height);

	/*
	 * CHANGE ENDS HERE
	 ****************************************************/

	show_all();
}

Glib::ustring Dialog_Interactive::get_entry1() const
{
  return m_Entry1.get_text();
}

Glib::ustring Dialog_Interactive::get_entry2() const
{
  return m_Entry2.get_text();
}

Dialog_Interactive::~Dialog_Interactive()
{
}

int main(int argc, char *argv[])
{
  Gtk::Main kit(argc, argv);

  Example_Dialog window;

  Gtk::Main::run(window); //Shows the window and returns when it is closed.

  return 0;
}


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