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LImageViewerCell::FreezeSubCell

Summary

Freezes the sub-cell with the specified index.

Syntax

#include "ltwrappr.h"

L_INT LImageViewerCell::FreezeSubCell(nSubCellIndex, bFreeze, uFlags)

Parameters

L_INT nSubCellIndex

A zero-based index into the image list attached to the cell. This sub-cell will be toggled to frozen or not frozen. Pass -1 to apply this effect on all sub-cells. Pass -2 to apply this effect on the selected sub-cell.

L_BOOL bFreeze

Flag that indicates whether to freeze or unfreeze the sub-cell at the specified index. Possible values are:

Value	Meaning
TRUE	Freeze the sub-cell.
FALSE	Unfreeze the sub-cell.

L_UINT uFlags

Flags that determine whether to apply the feature on the one cell only, or more than one cell. This value can only be used when the cell is attached to the LImageViewer through the function LImageViewer::InsertCell. Possible values are:

Value	Meaning
CELL_APPLYTOTHIS	[0x00000000] Apply the feature to this cell only.
CELL_APPLYTOALL	[0x10000000] Apply the feature to all the cells in the Image Viewer.
CELL_APPLYTOSELECTED	[0x20000000] Apply the feature to the selected cells in the Image Viewer.

Returns

Value	Meaning
SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

The properties of a frozen sub-cell cannot be modified except by manually setting them using LImageViewerCell::SetActionProperties function.

To determine whether a sub-cell is frozen, call the LImageViewerCell::IsSubCellFrozen function. To determine whether a cell is frozen, call LImageViewerCell::IsCellFrozen function.

To freeze all cells call LImageViewerCell::FreezeCell function.

Required DLLs and Libraries

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

Example

This example will freeze the even subcell and then type the word frozen in the middle of the frozen sub-cells.

#ifdef LImageViewerChild  
class LImageViewerChild :public LImageViewerCell 
{ 
   virtual L_INT PostPaintCallBack (pDISPCONTAINERCELLINFO pCellInfo); 
}; 
#endif 
 
L_INT LImageViewerChild::PostPaintCallBack (pDISPCONTAINERCELLINFO pCellInfo) 
{ 
   if (IsSubCellFrozen(pCellInfo->nSubCellIndex, 0)) 
   { 
      HPEN hPen = CreatePen(PS_SOLID, 2, RGB(255, 0, 0)); 
      HPEN hOldPen = (HPEN)SelectObject(pCellInfo->hDC, hPen); 
      MoveToEx(pCellInfo->hDC, pCellInfo->rcRect.left, pCellInfo->rcRect.top, NULL); 
      LineTo(pCellInfo->hDC, pCellInfo->rcRect.right, pCellInfo->rcRect.bottom); 
 
      MoveToEx(pCellInfo->hDC, pCellInfo->rcRect.right, pCellInfo->rcRect.top, NULL); 
      LineTo(pCellInfo->hDC, pCellInfo->rcRect.left, pCellInfo->rcRect.bottom); 
      SelectObject(pCellInfo->hDC, hOldPen); 
      DeleteObject(hPen); 
   } 
 
   return SUCCESS; 
} 
 
L_INT LImageViewer_FreezeSubCellExample(LImageViewerCell& ImageViewerCell) 
{ 
   L_INT       nRet; 
   L_INT       nCount; 
   L_INT       nI; 
   LBitmapList BitmapList; 
 
   nRet = BitmapList.Load(MAKE_IMAGE_PATH(TEXT("image1.dcm"))); 
   if (nRet != SUCCESS) 
      return nRet; 
 
   nRet = ImageViewerCell.SetCellBitmapList(BitmapList.GetHandle(),TRUE,0); 
   if (nRet != SUCCESS) 
      return nRet; 
 
   nCount = BitmapList.GetItemsCount(); 
 
   for (nI = 0; nI < nCount; nI++) 
   { 
      if (((nI >> 1) << 1) == nI ) 
      { 
         nRet = ImageViewerCell.FreezeSubCell(nI, TRUE, 0); 
         if (nRet != SUCCESS) 
            return nRet; 
      } 
   } 
 
   ImageViewerCell.EnablePostPaintCallBack(TRUE); 
 
   //ImageViewerCell.RepaintCell(0, 0); 
   return SUCCESS; 
}