LBitmapWindow::CreatePanWnd

#include "ltwrappr.h"

HWND LBitmapWindow::CreatePanWnd(ulDisplayFlags, x, y, nCx, nCy, pszClassName, hIcon, hCursor, bSysMenu)

Creates a Pan Window for the bitmap window.

Returns

Comments

If you call this function for a class object that already has a created Pan Window associated with it, the function will destroy the existing Pan Window and create a new one with the specified settings.

Required DLLs and Libraries

Platforms

Win32, x64.

See Also

Example

#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName
class LUserBWndCreatePanWnd : public LBitmapWindow
{
public:
   LUserBWndCreatePanWnd() ;
   virtual ~LUserBWndCreatePanWnd() ;
   virtual L_VOID PanWndCallBack(L_UINT uFlag,LPRECT rcPan);
   virtual LRESULT MsgProcCallBack(HWND hWnd,UINT uMsg,WPARAM wParam,LPARAM lParam);
   virtual L_BOOL OnFileDropped(L_TCHAR * pszFile,L_UINT uFileNumber,L_UINT uFilesCount);
   virtual L_VOID  OnDraw(HDC hdc,RECT& Rect);
   virtual L_VOID  OnZoom(L_UINT uZoomPercent);
   virtual L_VOID  PaintNotification(L_INT nPass, L_INT uType);
};
LUserBWndCreatePanWnd::LUserBWndCreatePanWnd()
{
}
LUserBWndCreatePanWnd::~LUserBWndCreatePanWnd()
{
}
L_VOID LUserBWndCreatePanWnd::PanWndCallBack(L_UINT uFlag,LPRECT rcPan)
{
   UNREFERENCED_PARAMETER(rcPan);
   // user can set his code for each message
   switch (uFlag)
   {
   case PANWIN_CREATED:
      // user code 
      return;
   case PANWIN_UPDATED:
      // user code 
      return;
   case PANWIN_DESTROYED:
      // user code 
      return;
   case PANWIN_MOVED:
      // user code 
      return;
   }
}
LRESULT LUserBWndCreatePanWnd::MsgProcCallBack(HWND hWnd,UINT uMsg,WPARAM wParam,LPARAM lParam)
{
   switch (uMsg)
   {
   case WM_CLOSE:
      break ;
   };
   return LBitmapWindow::MsgProcCallBack(hWnd,uMsg,wParam,lParam);
}
L_BOOL LUserBWndCreatePanWnd::OnFileDropped(L_TCHAR * pszFile, L_UINT uFileNumber, L_UINT uFilesCount)
{
   UNREFERENCED_PARAMETER(uFilesCount);
   UNREFERENCED_PARAMETER(uFileNumber);
   SetFileName(pszFile);
   if (Load() == SUCCESS)
       return FALSE;  //if loading the file succeeded then stop enumerating files
   return TRUE;
}
L_VOID LUserBWndCreatePanWnd::OnDraw(HDC hdc,RECT& Rect)
{
   UNREFERENCED_PARAMETER(Rect);
   Rectangle( hdc,10,10, 50,50); 
}
L_VOID LUserBWndCreatePanWnd::OnZoom(L_UINT uZoomPercent)
{
   L_TCHAR szBuffer[50];
   wsprintf(szBuffer,TEXT("Zoom Percent = %u\n"),uZoomPercent) ;
 ::MessageBox( m_hWnd, szBuffer, TEXT("Zoom Percent"), MB_OK) ;
}
L_VOID LUserBWndCreatePanWnd::PaintNotification(L_INT nPass, L_INT nType)
{
   L_TCHAR szBuffer[50];
   wsprintf(szBuffer,TEXT("Pass Number = %d\nType Effect No. = %d\n"), nPass, nType) ;
 ::MessageBox( m_hWnd, szBuffer, TEXT("Effect Information"), MB_OK) ;
}
L_INT LBitmapWindow__CreatePanWndExample(HWND hWndParent) 
{
   L_INT nRet;
   LUserBWndCreatePanWnd UserBitmapWindow;
   HWND hWnd ;
   UserBitmapWindow.SetFileName(MAKE_IMAGE_PATH(TEXT("image1.cmp")));
   nRet = UserBitmapWindow.Load(0, ORDER_BGR) ;
   if (nRet== SUCCESS)
   {
      hWnd = UserBitmapWindow.CreateWnd( hWndParent) ;
      if (hWnd == NULL)
         return 0 ;
      UserBitmapWindow.HandlePalette(WM_QUERYNEWPALETTE,0,0);
      UserBitmapWindow.Repaint();
      L_UINT32 ulDisplayFlags = UserBitmapWindow.GetDisplayMode() ;
      
      UserBitmapWindow.CreatePanWnd(ulDisplayFlags, 0, 0, 150, 150, 
                                    TEXT("PAN_WIN"), NULL, NULL, TRUE) ;
      
      hWnd = UserBitmapWindow.GetPanWnd() ;
      
      if (hWnd != NULL)
      {
         nRet =UserBitmapWindow.UpdatePanWnd( ulDisplayFlags, RGB(255,0,0),TEXT("Pan Window ")) ;
         if(nRet !=SUCCESS)
            return nRet;
      }
      else
         return FAILURE; 
      //... do any operation on window
      nRet =UserBitmapWindow.Flip();
      if(nRet !=SUCCESS)
         return nRet;
      if (UserBitmapWindow.IsPanWndCreated() == TRUE)
         UserBitmapWindow.UpdatePanWnd( ulDisplayFlags, RGB(255,255,255),TEXT("Pan Window ")) ; 
      MessageBox(hWndParent, TEXT("Pan Window was created successfully.\n press OK to destroy it"), TEXT("BitmapWindowSamples"), MB_OK);
      hWnd = UserBitmapWindow.GetPanWnd() ;
      if (hWnd != NULL)
      {
         // after you finish, destroy PanWindow 
         nRet =UserBitmapWindow.DestroyPanWnd() ;
         if(nRet !=SUCCESS)
            return nRet;
      }
      else
         return FAILURE;
      hWnd = UserBitmapWindow.GetBitmapWnd() ;
      if (hWnd != NULL)
      {
         L_FLOAT  fZoomFactor ;
         L_UINT   uPercent ;
         UserBitmapWindow.ZoomIn() ; 
         // set zoom factor with initialize value 
         UserBitmapWindow.SetZoomFactor() ;
         // set zoom percent
         UserBitmapWindow.SetZoomPercent(100);
         UserBitmapWindow.ZoomIn() ;
         // get current zoom factor 
         fZoomFactor = UserBitmapWindow.GetZoomFactor() ;
         fZoomFactor += 0.50 ;
         // set new zoom factor
         UserBitmapWindow.SetZoomFactor(fZoomFactor) ;
         uPercent = UserBitmapWindow.GetZoomPercent();
         uPercent += 50 ;
         // set new zoom percent
         UserBitmapWindow.SetZoomPercent(uPercent);
         UserBitmapWindow.ZoomOut();
         // Drag Files ...
         if (UserBitmapWindow.IsDragAcceptFilesEnabled() == FALSE)
            UserBitmapWindow.EnableDragAcceptFiles(TRUE) ;
      }
      else
         return FAILURE; 
}
   return SUCCESS ;
}