Dialog Box

//----------------------------------------------------------------------------------------------------------------------class BaseModalDialog{public:   /**    * Constructor   **/   BaseModalDialog();   /**   * Destructor   **/   virtual ~BaseModalDialog();protected:      /**   * Creates the dialog   *   * @param instance - instance of the application that owns the dialog   * @param templateName - name of an included dialog template resource   * @param parent - handle to the parent window of the dialog   *   * @return int - result from EndDialog when the dialog exits   *   **/   INT_PTR Init(HINSTANCE instance, const char * templateName, HWND parent);   /**   * Initializes all the controls in the dialog   **/   virtual void InitComponents() = 0;   /**    * The dialog message procedure for the base dialog   *   * This procedure will foward dialog messages to the ModalDlgProc of the class instance that created the dialog   *   * @param hwnd - handle to the dialog to whom the message was sent   * @param message - the message sent to the dialog   * @param lparam - additional message information   * @param wparam - additional message information   *   * @return BOOL - TRUE if it was handled, otherwise FALSE   */   static INT_PTR CALLBACK BaseModalDlgProc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam);   /**   * Dialog message procedure for derived classes   *   * Derived classes should override this method to process any dialog message they are interested in   *   * @param hwnd - handle to the dialog to whom the message was sent   * @param message - the message sent to the dialog   * @param lparam - additional message information   * @param wparam - additional message information   *   * @return LRESULT - TRUE if the message was handled, otherwise false.   **/   virtual INT_PTR ModalDlgProc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam);   HWND m_hwnd;            // Handle to the dialog};} // namespace common_lib_cpisz#endif

#include "BaseModalDialog.h"// Common Lib Includes#include "BaseException.h"// Standard Includes#include <sstream>namespace common_lib_cpisz{//-----------------------------------------------------------------------------BaseModalDialog::BaseModalDialog()   :   m_hwnd(NULL){}//-----------------------------------------------------------------------------BaseModalDialog::~BaseModalDialog(){}//-----------------------------------------------------------------------------INT_PTR BaseModalDialog::Init(HINSTANCE instance, const char * templateName, HWND parent){   DLGPROC procedure;   INT_PTR result = DialogBoxParam(instance,                                    templateName,                                   parent,                                   BaseModalDlgProc,                                   reinterpret_cast<LPARAM>(this));   if( result == 0 || result == -1 )   {      DWORD err = GetLastError();   }   return result;}//-----------------------------------------------------------------------------INT_PTR CALLBACK BaseModalDialog::BaseModalDlgProc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam){   if( message == WM_INITDIALOG )   {      // Store a pointer to the object owning this dialog      BaseModalDialog * obj = reinterpret_cast<BaseModalDialog *>(lparam);      SetWindowLongPtr(hwnd, GWLP_USERDATA, reinterpret_cast<LONG_PTR>(obj));      // Store a handle to the dialog      obj->m_hwnd = hwnd;      // Initialize the dialogs components      obj->InitComponents();   }   // Retrieve a pointer to the object owning this dialog   BaseModalDialog * obj = reinterpret_cast<BaseModalDialog *>(GetWindowLongPtr(hwnd, GWLP_USERDATA));   // Pass the message to derived classes   INT_PTR result = false;   if( obj )   {      result = obj->ModalDlgProc(hwnd, message, wparam, lparam);   }      return result;}//-----------------------------------------------------------------------------INT_PTR BaseModalDialog::ModalDlgProc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam){   return false;}} // namespace common_lib_cpisz

#ifndef GRAPHICSCONFIGDLG_H#define GRAPHICSCONFIGDLG_H// EngineX Includes#include "Core/DisplayModeEnumerator.h"#include "Core/DisplayMode.h"// Common Lib Includes#include "BaseModalDialog.h"//--------------------------------------------------------------------------------class GraphicsConfigDlg : public common_lib_cpisz::BaseModalDialog{public:   /**   * Constructor   */   GraphicsConfigDlg(DisplayMode & result);	   /**   * Deconstructor   */   ~GraphicsConfigDlg();   /**   * Creates the dialog   *   * @param instance - instance of the application that owns the dialog   * @param templateName - name of an included dialog template resource   * @param parent - handle to the parent window of the dialog   *   * @return int - any value returned from EndDialog when the dialog exits   *   **/   INT_PTR Run(HINSTANCE instance);   void InitComponents() {}private:   /**   * Graphics Config Dialog Procedure   */   INT_PTR ModalDlgProc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam);         /**   * The display mode that is a result of the users selections   **/   DisplayMode & m_displayMode;};#endif

#include "GraphicsConfigDlg.h"#include "resource.h"// Common Lib Includes#include "BaseException.h"// Windows Includes#include <commctrl.h>// Standard Includes#include <sstream>#include <cassert>using namespace common_lib_cpisz;//-----------------------------------------------------------------------------GraphicsConfigDlg::GraphicsConfigDlg(DisplayMode & result)   :   BaseModalDialog(),   m_displayMode(result){}//-----------------------------------------------------------------------------GraphicsConfigDlg::~GraphicsConfigDlg(){}//-----------------------------------------------------------------------------INT_PTR GraphicsConfigDlg::Run(HINSTANCE instance){   return BaseModalDialog::Init(instance, MAKEINTRESOURCE(IDD_GRAPHICS_CONFIG), NULL);}//----------------------------------------------------------------------INT_PTR GraphicsConfigDlg::ModalDlgProc(HWND dlg, UINT message, WPARAM wparam, LPARAM lparam){   switch(message)   {      case WM_COMMAND:      {         switch(LOWORD(wparam))         {            // Button - OK            case IDOK:            {               EndDialog(dlg, 0);               return true;            }            default:            {               break;            }         }         break;      }      default:      {         break;      }   }   return false;}

//----------------------------------------------------------------------int WINAPI WinMain(HINSTANCE instance, HINSTANCE prevInstance, LPSTR, INT){   // Get display mode   DisplayMode displayMode;   try   {      GraphicsConfigDlg configDlg(displayMode); // The graphics config dialog      configDlg.Run(instance);                  // Run the dialog	}   catch(BaseException & error)   {      error.MsgBox();      return 1;   }   return 0;}