wxMessageBox(const wxString& message, const wxString& caption = "Message", int style = wxOK,
wxWindow *parent = NULL, int x = -1, int y = -1)

PromptOK, PromptAbortRetry, ... (or Prompt & tell it yourselves)

#include "TrayIcon.h"

#define IMAGECLASS Tray
#define IMAGEFILE  "Bombs.iml"
#include <Draw/iml.h>
 
struct App : TrayIcon {
    void Info() {
//        Icon(Tray::Icon1());
        PromptOK("TrayIcon launched this prompt!");
//        Icon(Tray::Icon());
    }
 
    void Menu(Bar& bar) {
        bar.Add("Info..", THISBACK(Info));
        bar.Separator();
        bar.Add("Exit", THISBACK(Break));
    }
 
    typedef App CLASSNAME;
 
    App() {
        WhenBar = THISBACK(Menu);
        WhenLeftDouble = THISBACK(Info);
        Icon(Tray::Small());
        Tip("This is U++ tray icon");
    }
};
 
GUI_APP_MAIN
{
    App().Run();
}

void TopWindow::CenterRect(HWND hwnd)
{
	SetupRect();
	if(hwnd && center == 1 || center == 2) {
		Size sz = GetRect().Size();
		Rect frmrc(sz);
	#ifndef PLATFORM_WINCE
		::AdjustWindowRect(frmrc, WS_OVERLAPPEDWINDOW, FALSE);
	#endif
		Rect r, wr;
		wr = Ctrl::GetWorkArea().Deflated(-frmrc.left, -frmrc.top,
			frmrc.right - sz.cx, frmrc.bottom - sz.cy);
		sz.cx = min(sz.cx, wr.Width());
		sz.cy = min(sz.cy, wr.Height());
		if(center == 1) {
			::GetClientRect(hwnd, r);
			if(r.IsEmpty())
				r = wr;
			else {
				Point p = r.TopLeft();
				::ClientToScreen(hwnd, p);
				r.Offset(p);
			}
		}
		else

	Ctrl::Create(parent = 0x0) in struct PromptDlgWnd__ : 0x12f584(hwnd 0x0)
		Ctrl::GetScreenClient: hwnd = 0xF01F0, client = [0, 0] - [251, 94] : (251, 94), screen(tl) = [386, 322], screen(br) = [637, 416]
		WM_MOVE / WM_SIZE: screen client = [386, 322] - [637, 416] : (251, 94)
		Ctrl::WndDestroyCaret()
		Ctrl::GetScreenClient: hwnd = 0xF01F0, client = [0, 0] - [251, 94] : (251, 94), screen(tl) = [386, 322], screen(br) = [637, 416]
		WM_MOVE / WM_SIZE: screen client = [386, 322] - [637, 416] : (251, 94)
		Ctrl::WndDestroyCaret()
		WM_ACTIVATE struct PromptDlgWnd__ : 0x12f584(hwnd 0xf01f0), wParam = 1, focusCtrlWnd = NULL, raw = 0x0
		WM_SETFOCUS struct PromptDlgWnd__ : 0x12f584(hwnd 0xf01f0), focusCtrlWnd = NULL, raw = 0xF01F0
		ActivateWnd struct PromptDlgWnd__ : 0x12f584(hwnd 0xf01f0)
		About to set focus: struct PromptDlgWnd__ : 0x12f584(hwnd 0xf01f0)
		Do SyncCaret focusCtrl: struct PromptDlgWnd__ : 0x12f584(hwnd 0xf01f0), caretCtrl: NULL
		Ctrl::WndDestroyCaret()
		Focus: struct PromptDlgWnd__ : 0x12f584(hwnd 0xf01f0) FocusWnd:struct PromptDlgWnd__ : 0x12f584(hwnd 0xf01f0)
		//WM_SETFOCUS 0xF01F0, focusCtrlWnd = struct PromptDlgWnd__ : 0x12f584(hwnd 0xf01f0), raw = 0xF01F0
		Ctrl::GetScreenClient: hwnd = 0xF01F0, client = [0, 0] - [251, 94] : (251, 94), screen(tl) = [386, 322], screen(br) = [637, 416]
	//Ctrl::Create in struct PromptDlgWnd__ : 0x12f584(hwnd 0xf01f0)
	(void *)::GetActiveWindow() = 0xF01F0
	(void *)top->hwnd = 0xF01F0
	Ctrl::WndEnable(false) in struct App : 0x12fda0(hwnd 0x14029e), focusCtrlWnd = struct PromptDlgWnd__ : 0x12f584(hwnd 0xf01f0), raw = 0xF01F0
	//Ctrl::WndEnable(false) -> true struct App : 0x12fda0(hwnd 0x14029e), focusCtrlWnd = struct PromptDlgWnd__ : 0x12f584(hwnd 0xf01f0), raw = 0xF01F0
	Entering event loop at level 2

void show_msgbox( const wxString& w, int buttons )
{
  int id = wxMessageBox( w, wxMessageBoxCaptionStr, buttons );
  switch( id )
  {
  case wxOK:      wxMessageBox( w + wxT(" -> wxOK") );     break;
  case wxCANCEL:  wxMessageBox( w + wxT(" -> wxCANCEL") ); break;
  case wxYES:     wxMessageBox( w + wxT(" -> wxYES") );    break;
  case wxNO:      wxMessageBox( w + wxT(" -> wxNO") );     break;
  default:
    wxMessageBox( wxString::Format(wxT("%ld"), id ) );
    break;
  }
}

#define wxBOX(a) show_msgbox(wxT(#a), a)
  wxBOX(wxOK);
  wxBOX(wxYES_NO);
  wxBOX(wxYES_NO|wxCANCEL);
  wxBOX(wxOK|wxCANCEL);