Retrieves the column and row number for the cell with the specified index.
#include "ltwrappr.h"
L_INT LImageViewer::GetCellPosition (nCellIndex, puRow, puCol, uFlags);
A zero-based index of the cell for which to get the position.
Pointer to a variable to be updated with the vertical position (row) of the specified cell. Row numbering starts with 1.
Pointer to a variable to be updated with the horizontal position (column) of the specified cell. Column numbering starts with 1.
Reserved for future use. Pass 0.
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. To get extended error information, call GetLastError, and refer to Return Codes. |
The row and column numbers obtained by this function are relative to the first cell in the container.
This function scrolls down or up in order to make the cell become visible.
L_INT LImageViewer_GetCellPositionExample(LImageViewer& ImageViewer)
{
L_INT nCellIndex = 0 ;
L_INT nCount;
L_UINT uRow;
L_UINT uCol;
L_UINT nRet;
DISPCONTAINERPROPERTIES DispContainerProp;
// Get Cells Count
nCount = ImageViewer.GetCellCount(0);
if ((nCellIndex < 0) || (nCellIndex >= nCount))
return FAILURE;
// get the row count of the container
DispContainerProp.uStructSize = sizeof(DISPCONTAINERPROPERTIES);
DispContainerProp.uMask = DCPF_NUMROWS;
nRet = ImageViewer.GetProperties(&DispContainerProp, 0);
if(nRet != SUCCESS)
return nRet;
// get the row and the col position
nRet = ImageViewer.GetCellPosition(nCellIndex, &uRow, &uCol, 0);
if(nRet != SUCCESS)
return nRet;
nRet = ImageViewer.SetFirstVisibleRow(max(0, ((L_INT)uRow - (L_INT)DispContainerProp.uNumRows + 1)), 0);
if(nRet != SUCCESS)
return nRet;
return SUCCESS;
}