strange behaviour (button fills whole window) Topic is solved

[PGU8]

I highly doubt that this is a bug, but I just can't find any explanation for this weird behaviour
when there are 2 buttons, it works as I expected..

Code: Select all

class MyFrame : public wxFrame
{
public:
    MyFrame() : wxFrame(NULL, wxID_ANY, "Test")
    {
        wxSizer* sizer = new wxBoxSizer(wxHORIZONTAL);
        wxButton* one = new wxButton(this, wxID_ANY, "Hello", { 100, 50 }, { 50,50 });
        sizer->Add(one);
        wxButton* two = new wxButton(this, wxID_ANY, "Hello", { 150, 50 }, { 50,50 });
        sizer->Add(two);
        Show(true);
    }
private:
};

2 buttons result:

double.png (3.16 KiB) Viewed 495 times

but when there is a single button with defined position & size, it fills the whole screen..

Code: Select all

class MyFrame : public wxFrame
{
public:
    MyFrame() : wxFrame(NULL, wxID_ANY, "Test")
    {
        wxSizer* sizer = new wxBoxSizer(wxHORIZONTAL);
        wxButton* one = new wxButton(this, wxID_ANY, "Hello", { 100, 50 }, { 50,50 });
        sizer->Add(one);
        //wxButton* two = new wxButton(this, wxID_ANY, "Hello", { 150, 50 }, { 50,50 });
        //sizer->Add(two);
        Show(true);
    }
private:
};

single button result:

single.png (2.89 KiB) Viewed 495 times

I would like the single button to be as the size of what I defined, 50 by 50...

[doublemax]

It's not a bug, it's a feature

If a wxFrame has exactly one immediate child, this child will always be stretched to fill the whole client area.

Use a wxPanel as only child of the frame, then put your button(s) onto the panel. This will also get rid of the ugly dark background color.

BTW: The ugly look of the buttons makes me believe that your application does not contain a manifest, then you get the old "Windows 95" style look. If you don't know how to add a manifest to your application, search for "manifest" in the forum. There should be several threads about this.

[PB]

It's not a bug, it's a feature ;)

It is even a documented feature for wxFrame.

if the frame has exactly one child window, not counting the status and toolbar, this child is resized to take the entire frame client area. If two or more windows are present, they should be laid out explicitly either by manually handling wxEVT_SIZE or using sizers;

Use a wxPanel as only child of the frame, then put your button(s) onto the panel. This will also get rid of the ugly dark background color.

Additionally, wxPanel will handle <Tab> navigation between controls, which would not work if the controls were placed directly on the frame.