LBitmapWindow::CreatePanWnd

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#include "ltwrappr.h"

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

L_UINT32 ulDisplayFlags;	/* flags that determine how the image is painted in the Pan Window */
L_INT x;	/* x coordinate of the Pan Window */
L_INT y;	/* y coordinate of the Pan Window */
L_INT nCx;	/* width of the Pan Window */
L_INT nCy;	/* height of the Pan Window */
L_TCHAR * pszClassName;	/* registered window class name */
HICON hIcon;	/* icon handle */
HCURSOR hCursor;	/* cursor handle */
L_BOOL bSysMenu;	/* flag that indicates whether the Pan Window will have a system menu */

Creates a Pan Window for the bitmap window.

Parameter	Description
ulDisplayFlags	Flags that determine how the image is painted in the Pan Window. For values, refer to Flags for the Flags for the LBitmapSettings::SetDisplayMode Function.
x	X coordinate for the origin of the Pan Window.
y	Y coordinate for the origin of the Pan Window.
nCx	Width of the Pan Window.
nCy	Height of the Pan Window.
pszClassName	The registered window class name to be used in creating the Pan Window.
hIcon	The icon handle used for creating Pan Window.
hCursor	The cursor handle used for creating Pan Window.
bSysMenu	Flag that indicates whether the Pan Window will have a system menu. Possible values are:
	Value	Meaning
	TRUE	The Pan Window will have a system menu.
	FALSE	The Pan Window will not have a system menu.

Returns

!= NULL	The function was successful and the returned value is the window handle for the created control.
NULL	An error occurred, and the window could not be created.

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

LTDIS
LTDLG
LTEFX
LTFIL
LTIMG
LTSCR
LTTWN

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64.

See Also

Functions:

Class Members

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 ;
}