📄 wndproc.c
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}
case IDCANCEL:
EndDialog(hwnd, 0);
break;
}
return (TRUE);
}
return (FALSE);
}
BOOL CALLBACK AddRecDlgProc( HWND hWnd,UINT message, WPARAM wParam, LPARAM lParam )
{
WORD wNotifyCode, wID;
HWND hwndCtl;
static INSERTSTRUCT * pInsert;
wNotifyCode = HIWORD(wParam); // notification code
wID = LOWORD(wParam); // item, control, or accelerator identifier
hwndCtl = (HWND) lParam; // handle of control
switch(message)
{
case WM_INITDIALOG:
// Should return nonzero to set focus to the first control in the
// dialog, or zero if this routine sets the focus manually.
pInsert = (INSERTSTRUCT *) lParam;
return (TRUE);
case WM_COMMAND:
{
switch(wID)
{
case IDCANCEL:
EndDialog(hWnd, IDCANCEL);
break;
case IDC_SAVE:
{
BOOL bTranslS, bTranslUS;
DWORD cbLong, cbULong, cbString, cbBlob;
TCHAR * pszLong, * pString;
BYTE * pBlob;
UINT unChars;
pInsert->pString = NULL;
pInsert->pBlob = NULL;
cbLong = SendDlgItemMessage(hWnd, IDC_LONG, WM_GETTEXTLENGTH, 0, 0);
cbULong = SendDlgItemMessage(hWnd, IDC_ULONG, WM_GETTEXTLENGTH, 0, 0);
pszLong = LocalAlloc( LPTR , max(cbULong, (cbLong * sizeof(TCHAR) + sizeof(TCHAR))));
cbString = SendDlgItemMessage(hWnd, IDC_STRING, WM_GETTEXTLENGTH, 0, 0);
pString = (TCHAR *) LocalAlloc( LPTR , (cbString * sizeof(TCHAR) + sizeof(TCHAR)));
cbBlob = SendDlgItemMessage(hWnd, IDC_BLOB, WM_GETTEXTLENGTH, 0, 0);
pBlob = (BYTE *) LocalAlloc( LPTR , (cbBlob * sizeof(TCHAR) + sizeof(TCHAR)));
pInsert->shNumber = (short) GetDlgItemInt(hWnd,IDC_SHORT,&bTranslS,TRUE );
pInsert->ushNumber = GetDlgItemInt(hWnd,IDC_USHORT,&bTranslUS,FALSE );
if ( pszLong )
{
if ( unChars = GetDlgItemText(hWnd,IDC_LONG,pszLong, cbLong) )
pInsert->lNumber = _ttol(pszLong);
else
pInsert->lNumber = 0;
}
if ( pszLong)
{
if ( unChars = GetDlgItemText(hWnd,IDC_ULONG,pszLong,cbULong) )
pInsert->ulNumber = (unsigned long) _ttol(pszLong);
else
pInsert->ulNumber = 0;
}
if ( pString)
{
if ( unChars = GetDlgItemText(hWnd,IDC_STRING, pString, (INT) cbString))
pInsert->pString = pString;
}
if ( pBlob)
{
if ( unChars = GetDlgItemText(hWnd,IDC_BLOB,(TCHAR *)pBlob, cbBlob) )
{
pInsert->pBlob = pBlob;
pInsert->cbBlob = cbBlob * sizeof(TCHAR);
}
else
pInsert->cbBlob = 0;
}
else
pInsert->cbBlob = 0;
if ( pszLong )
LocalFree(pszLong);
EndDialog(hWnd, IDOK);
break;
}
default:
return(FALSE);
}
break;
}
default:
return(FALSE);
}
return (TRUE);
}
//
// FUNCTION: Main_OnNotify(HWND, int, LPNMHDR)
//
// PURPOSE: Handles any notifications the treeview control spits out.
//
// PARAMETERS:
// hwnd - handle of the window receiving the notification
// idCtl - identifies the control sending the notification
// pnmh - points to a NMHDR struct with more inforamation regarding the
// notification
//
// RETURN VALUE:
// (LRESULT) Dependant on the specific notification. See Below.
//
// COMMENTS:
//
LRESULT WINAPI Main_OnNotify(HWND hwnd, int idCtl, LPNMHDR pnmh)
{
HTREEITEM hti, htiNext;
switch (pnmh->code)
{
// A directory node has been collapsed. Now we can remove the child items
// from the node.
case TVN_SELCHANGED:
{
HTREEITEM hti;
TV_ITEM ParentItem;
TCHAR szEntryName[CEDB_MAXDBASENAMELEN];
LPNM_TREEVIEW pnmtv = (LPNM_TREEVIEW) pnmh;
if ( bRemovingProps )
break;
OutputDebugString(TEXT("Item selected\r\n"));
// Check to see if this is a database or property
// if item has no parent then database
if ( !(hti=TreeView_GetParent(pnmh->hwndFrom, pnmtv->itemNew.hItem )) )
{
OutputDebugString(TEXT("Display Database Information\r\n"));
// Get the text parent
pnmtv->itemNew.mask |= TVIF_TEXT;
pnmtv->itemNew.pszText = szEntryName;
pnmtv->itemNew.cchTextMax = CEDB_MAXDBASENAMELEN;
if (!TreeView_GetItem(pnmtv->hdr.hwndFrom, &pnmtv->itemNew))
return (FALSE);
else
{
// Show DB Properties
ShowDBInformation(szEntryName);
}
}
else // database property
{
DWORD dwOpenHandle = (DWORD) INVALID_HANDLE_VALUE;
ParentItem.hItem = hti;
ParentItem.mask = TVIF_PARAM;
if ( TreeView_GetItem(pnmh->hwndFrom, &ParentItem) )
dwOpenHandle = ParentItem.lParam;
OutputDebugString(TEXT("Display Database Property Information\r\n"));
// Get the text child property
pnmtv->itemNew.mask |= (TVIF_TEXT | TVIF_PARAM);
pnmtv->itemNew.pszText = szEntryName;
pnmtv->itemNew.cchTextMax = CEDB_MAXDBASENAMELEN;
if (!TreeView_GetItem(pnmtv->hdr.hwndFrom, &pnmtv->itemNew))
return (FALSE);
else
{
ShowPropDesc(pnmtv->itemNew.lParam, dwOpenHandle, -1);
}
}
break;
}
case TVN_ITEMEXPANDED:
{
LPNM_TREEVIEW pnmtv = (LPNM_TREEVIEW) pnmh;
if (pnmtv->action == TVE_COLLAPSE)
{
OutputDebugString(TEXT("Item collapsed\r\n"));
// Now actually remove the child items within this directory
hti = TreeView_GetChild(pnmh->hwndFrom, pnmtv->itemNew.hItem);
while (hti)
{
htiNext = TreeView_GetNextSibling(pnmh->hwndFrom, hti);
TreeView_DeleteItem(pnmh->hwndFrom, hti);
hti = htiNext;
}
}
return (FALSE);
}
// A node is expanding or collapsing. We need to update the folder
// images to reflect either a closed or open folder depending on it's
// new state.
case TVN_ITEMEXPANDING:
{
// cast the NMHDR into a treeview notify structure
LPNM_TREEVIEW pnmtv = (LPNM_TREEVIEW) pnmh;
if (pnmtv->action == TVE_COLLAPSE)
{
OutputDebugString(TEXT("Item collapsing\r\n"));
// Retrieve the image from the current item
pnmtv->itemNew.mask = TVIF_IMAGE | TVIF_SELECTEDIMAGE;
TreeView_GetItem(pnmh->hwndFrom, &(pnmtv->itemNew));
// Set the item's image to the closed folder
pnmtv->itemNew.iImage = IMAGE_CLOSED;
pnmtv->itemNew.iSelectedImage = IMAGE_CLOSED;
TreeView_SetItem(pnmh->hwndFrom, &(pnmtv->itemNew));
}
else
{
TCHAR szDBName[CEDB_MAXDBASENAMELEN];
OutputDebugString(TEXT("Item expanding\r\n"));
// Retrieve the image from the current item
pnmtv->itemNew.mask = TVIF_IMAGE | TVIF_SELECTEDIMAGE;
TreeView_GetItem(pnmh->hwndFrom, &(pnmtv->itemNew));
// Set the item's image to the closed folder
pnmtv->itemNew.iImage = IMAGE_OPEN;
pnmtv->itemNew.iSelectedImage = IMAGE_OPEN;
TreeView_SetItem(pnmh->hwndFrom, &(pnmtv->itemNew));
// Get the text for the first item
pnmtv->itemNew.mask |= (TVIF_TEXT|TVIF_PARAM);
pnmtv->itemNew.pszText = szDBName;
pnmtv->itemNew.cchTextMax = CEDB_MAXDBASENAMELEN;
if (!TreeView_GetItem(pnmtv->hdr.hwndFrom, &pnmtv->itemNew))
return (FALSE);
else
EnumDbaseProps(pnmtv->hdr.hwndFrom, (HTREEITEM)pnmtv->itemNew.hItem, pnmtv->itemNew.lParam);
}
return (FALSE); // return value is ignored
}
// The mouse has been clicked within the control. We need to determine
// if the click is over the state image and if so toggle the check box.
case NM_CLICK:
{
UINT state;
DWORD dwPos;
TV_HITTESTINFO tvhti;
HTREEITEM htiItemClicked;
POINT point;
HWND hwndTV = GetDlgItem(hwnd, IDC_TREEVIEW);
TV_ITEM tvi;
// Find out where the cursor was
dwPos = GetMessagePos();
point.x = LOWORD(dwPos);
point.y = HIWORD(dwPos);
ScreenToClient(hwndTV, &point);
tvhti.pt = point;
htiItemClicked = TreeView_HitTest(hwndTV, &tvhti);
// Now get the state information from the item and toggle it
if (tvhti.flags & TVHT_ONITEMSTATEICON)
{
// Fill out the TV_ITEM struct to get the state image mask and
// get the item from the control
tvi.hItem = htiItemClicked;
tvi.mask = TVIF_STATE;
tvi.stateMask = TVIS_STATEIMAGEMASK;
TreeView_GetItem(hwndTV, &tvi);
// Now toggle the state
state = tvi.state;
tvi.state = (state & INDEXTOSTATEIMAGEMASK(TVIS_GCNOCHECK)) ?
INDEXTOSTATEIMAGEMASK(TVIS_GCCHECK) :
INDEXTOSTATEIMAGEMASK(TVIS_GCNOCHECK);
// And finally set the new state of the item back into the
// control
TreeView_SetItem(hwndTV, &tvi);
}
return (0L); // Return value is ignored
}
}
return (0L);
}
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