Popup_demo.zip_CMiniFrameWnd_Popup_child_pupop demo

#include "stdafx.h" #include <objbase.h> #include <initguid.h> #include "Popup.h" #include "Tools.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif /////////////////////////////////////////////////////////////////////////////// CPopup::CPopup () : m_pCaller (NULL), m_pControl (NULL), m_pEvents (NULL), m_hPrevParentCtrl (NULL), m_bDestroy (false) { } /////////////////////////////////////////////////////////////////////////////// bool CPopup::Display (CWnd* pControl, CWnd* pCaller, CRect& rcCaller, IPopupCtrlEvent* pEvents) { if ( pControl == NULL ) { delete this; return false; } m_pControl = pControl; m_pCaller = pCaller; m_pEvents = pEvents; if ( m_pEvents != NULL && !m_pEvents->OnInit() ) { delete this; return false; } // Calculate the most appropriate position for the left-top corner of control // By default, at left and bottom of the caller CPoint pt (rcCaller.left, rcCaller.bottom); CWindowRect rcCtrl (m_pControl); // Alignment at right if necessary if ( pt.x + rcCtrl.Width() > ::GetSystemMetrics (SM_CXSCREEN) ) { pt.x = rcCaller.right-rcCtrl.Width(); } // Alignment at top if necessary if ( pt.y + rcCtrl.Height() > ::GetSystemMetrics (SM_CYSCREEN) ) { pt.y = rcCaller.top-rcCtrl.Height(); } // Adjustments to keep control into screen if ( pt.x + rcCtrl.Width() > ::GetSystemMetrics (SM_CXSCREEN) ) { pt.x = ::GetSystemMetrics (SM_CXSCREEN)-rcCtrl.Width(); } if ( pt.y + rcCtrl.Height() > ::GetSystemMetrics (SM_CYSCREEN) ) { pt.y = ::GetSystemMetrics (SM_CYSCREEN)-rcCtrl.Height(); } if ( pt.x < 0 ) pt.x = 0; if ( pt.y < 0 ) pt.y = 0; if ( !CMiniFrameWnd::Create (NULL, &afxChNil, WS_POPUP|(m_pCaller != NULL ? MFS_SYNCACTIVE : 0), CRect (pt.x, pt.y, pt.x+rcCtrl.Width(), pt.y+rcCtrl.Height()), m_pControl->GetParentFrame()) ) { return false; } m_hPrevParentCtrl = m_pControl->SetParent (this)->GetSafeHwnd(); m_pControl->SetWindowPos (NULL, 0, 0, 0, 0, SWP_NOZORDER|SWP_NOSIZE|SWP_SHOWWINDOW); ShowWindow (SW_SHOW); if ( m_pEvents != NULL ) { m_pEvents->OnShow(); } return true; } /////////////////////////////////////////////////////////////////////////////// void CPopup::EndPopup (bool bAbort, bool bSetFocus) { if ( m_pEvents != NULL ) { m_pEvents->OnHide (bAbort); } ASSERT (m_pControl->m_hWnd != NULL); m_pControl->ShowWindow (SW_HIDE); ASSERT (m_hPrevParentCtrl != NULL); ::SetParent (m_pControl->m_hWnd, m_hPrevParentCtrl); // Do a local copy of the pointer because DestroyWindow delete objet // and m_pCaller will not be valid after CWnd* pCaller = m_pCaller; if ( !m_bDestroy ) { m_bDestroy = true; DestroyWindow(); } if ( bSetFocus && pCaller != NULL ) { pCaller->SetFocus(); } } /////////////////////////////////////////////////////////////////////////////// BOOL CPopup::PreTranslateMessage (MSG* pMsg) { bool bEnd = false, bAbort = false, bResult = false; int nCode = doNothing; switch ( pMsg->message ) { case WM_KEYDOWN: // Default action for <Escape> key if ( pMsg->wParam == VK_ESCAPE ) { bEnd = bAbort = bResult = true; break; } if ( m_pEvents != NULL ) { IPopupCtrlEvent* pEvents = m_pEvents; // Search for the interface for the correct object (referenced by pMsg->hwnd) if ( pMsg->hwnd != m_pControl->m_hWnd ) { pEvents = m_pEvents->GetInterfaceOf (pMsg->hwnd); } if ( pEvents != NULL ) { nCode = pEvents->OnKeyDown (pMsg->wParam, LOWORD(pMsg->lParam), HIWORD(pMsg->lParam)); } } break; case WM_LBUTTONDOWN: if ( m_pEvents != NULL ) { IPopupCtrlEvent* pEvents = m_pEvents; // Search for the interface for the correct object if ( pMsg->hwnd != m_pControl->m_hWnd ) { pEvents = m_pEvents->GetInterfaceOf (pMsg->hwnd); } if ( pEvents != NULL ) { nCode = pEvents->OnLButtonDown (pMsg->wParam, CPoint ((short)LOWORD(pMsg->lParam), (short)HIWORD(pMsg->lParam))); } } break; case WM_LBUTTONUP: if ( m_pEvents != NULL ) { IPopupCtrlEvent* pEvents = m_pEvents; // Search for the interface for the correct object if ( pMsg->hwnd != m_pControl->m_hWnd ) { pEvents = m_pEvents->GetInterfaceOf (pMsg->hwnd); } if ( pEvents != NULL ) { nCode = pEvents->OnLButtonUp (pMsg->wParam, CPoint ((short)LOWORD(pMsg->lParam), (short)HIWORD(pMsg->lParam))); } } break; } switch ( nCode ) { case noSend: bResult = true; break; case end: bEnd = bResult = true; break; case abort: bEnd = bAbort = bResult = true; break; } if ( !bResult ) { bResult = CMiniFrameWnd::PreTranslateMessage (pMsg) != 0; } if ( bEnd ) { EndPopup (bAbort); } return bResult; } /////////////////////////////////////////////////////////////////////////////// void CPopup::PostNcDestroy () { delete this; } /////////////////////////////////////////////////////////////////////////////// BEGIN_MESSAGE_MAP (CPopup, CMiniFrameWnd) //{{AFX_MSG_MAP(CPopup) ON_WM_ACTIVATE() ON_WM_CANCELMODE() //}}AFX_MSG_MAP END_MESSAGE_MAP () IMPLEMENT_DYNCREATE (CPopup, CMiniFrameWnd); /////////////////////////////////////////////////////////////////////////////// void CPopup::OnActivate (UINT nState, CWnd* pWndOther, BOOL bMinimized) { CMiniFrameWnd::OnActivate (nState, pWndOther, bMinimized); if ( nState == WA_INACTIVE && !m_bDestroy ) { CFrameWnd* pFrame = NULL; bool bSetFocus = false; if ( m_pCaller != NULL && (pFrame=m_pCaller->GetParentFrame()) != NULL && pWndOther != NULL ) { bSetFocus = (pWndOther->m_hWnd == pFrame->m_hWnd); } EndPopup (true, bSetFocus); } } /////////////////////////////////////////////////////////////////////////////// void CPopup::OnCancelMode () { PostMessage (WM_DESTROY); }