resizing widgets within a window without resizing the window itself Topic is solved

[oguzakyuz]

Here is my situation: I've a frame which has a main sizer, which in turn includes a top and bottom sizer (all of which are box sizers). It looks like this:

Code: Select all

------------------------------------------------
|             Top Region                        |
-------------------------------------------------
|           |                                   |
|           |                                   |
|   Left    |           Right                   |
|           |                                   |
|           |                                   |
|           |                                   |
-------------------------------------------------

What I want is to allow the user to resize the left-right region without resizing the main window. I want to have something like this:

Code: Select all

------------------------------------------------
|             Top Region                        |
-------------------------------------------------
|                   |                           |
|                   |                           |
|   Left            |           Right           |
|                   |                           |
|                   |                           |
|                   |                           |
-------------------------------------------------

This is actually a pretty typical situation. For instance, when we open the file browser in gnome (or most other window managers), you can resize the region on the left that shows the commonly used folders.

What would be the wx approach to achieve this behavior?

Thanks for any help,

[New Pagodi]

I think the control you're trying to describe is wxSplitterWindow. Here's a basic sample that I think gives the behavior you're describing.

Code: Select all

// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

// for all others, include the necessary headers (this file is usually all you
// need because it includes almost all "standard" wxWidgets headers)
#ifndef WX_PRECOMP
    #include "wx/wx.h"
#endif

#include <wx/splitter.h>

class MyFrame : public wxFrame
{
    public:
        MyFrame( wxWindow* parent, int id = wxID_ANY, wxString title = "Demo",
                 wxPoint pos = wxDefaultPosition, wxSize size = wxDefaultSize,
                 int style = wxDEFAULT_FRAME_STYLE|wxTAB_TRAVERSAL );
};

MyFrame::MyFrame( wxWindow* parent, int id, wxString title, wxPoint pos,
                  wxSize size, int style )
        :wxFrame( parent, id, title, pos, size, style )
{
    int topWindowHeight = 100;
    int leftWindowWidth = 150;

    wxPanel* panel1 = new wxPanel( this, wxID_ANY );
    wxBoxSizer* bSizer = new wxBoxSizer( wxVERTICAL );

    wxPanel* panel2 = new wxPanel( panel1, wxID_ANY, wxDefaultPosition,
                                   wxSize(-1,topWindowHeight) );
    panel2->SetBackgroundColour(*wxRED);
    bSizer->Add( panel2, 0, wxEXPAND | wxALL, 5 );

    wxSplitterWindow* splitter = new wxSplitterWindow( panel1 );

    wxPanel* panel3 = new wxPanel( splitter, wxID_ANY );
    panel3->SetBackgroundColour(*wxGREEN);
    wxPanel* panel4 = new wxPanel( splitter, wxID_ANY );
    panel4->SetBackgroundColour(*wxBLUE);
    splitter->SplitVertically( panel3, panel4, leftWindowWidth );
    bSizer->Add( splitter, 1, wxEXPAND| wxLEFT|wxRIGHT|wxBOTTOM, 5 );

    panel1->SetSizer( bSizer );
    panel1->Layout();
}

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

wxIMPLEMENT_APP(MyApp);

This produces a frame like this:

splitter.png (2.36 KiB) Viewed 993 times

I've colored the 3 areas red, green, and blue; but obviously that's not a necessary step.

[oguzakyuz]

Thank you, this was exactly what I was looking for.

[ONEEYEMAN]

New Pagodi,
You didn't have to provide the code.
wxWidgets provides the spliter sample in their sample folder.

Thank you.