L_DlgCanvasResize

#include "l_bitmap.h"

L_LTDLG_API L_INT L_DlgCanvasResize(hWndOwner, pDlgParams)

L_HWND hWndOwner;	/* owner of dialog */
LPCANVASRESIZEDLGPARAMS pDlgParams;	/* pointer to a CANVASRESIZEDLGPARAMS structure */

Displays the Canvas Resize dialog box.

Parameter	Description
hWndOwner	Handle of the window which owns the dialog.
pDlgParams	Pointer to a CANVASRESIZEDLGPARAMS structure to be updated with the values entered by the user, through the dialog. Set members of this structure, before calling this function, to set the dialogs initial values.

Returns

SUCCESS_DLG_OK	The "OK" button was pressed, and the dialog exited successfully.
SUCCESS_DLG_CANCEL	The "Cancel" button was pressed, and the dialog exited successfully.
< 1	An error occurred. Refer to Return Codes.

Comments

The Canvas Resize dialog.

Required DLLs and Libraries

LTDLGIMG
LTDLGKRN
LTDLGUTL
LTDLGCTRL
LTDLGCOM
LTDIS
LTIMGUTL
LTIMGEFX
LTKRN

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

See Also

Functions:	L_DlgInit, L_CreateBitmap, L_CombineBitmap, L_CopyBitmap
Topics:	Dialogs: Geometric Transformations
	Using Imaging Common Dialog

Example

 L_INT DlgCanvasResizeExample(HWND hWnd,pBITMAPHANDLE   pBitmap)
{
   CANVASRESIZEDLGPARAMS DlgParams ;
   L_INT                 nRet ;
   memset ( &DlgParams, 0, sizeof ( CANVASRESIZEDLGPARAMS ) ) ;
   DlgParams.uStructSize    = sizeof ( CANVASRESIZEDLGPARAMS ) ;
   DlgParams.pBitmap        = pBitmap ;
   DlgParams.uDlgFlags      = DLG_CANVASRESIZE_SHOW_CURRENT_HEIGHT |
                              DLG_CANVASRESIZE_SHOW_CURRENT_WIDTH  |
                              DLG_CANVASRESIZE_SHOW_HORIZPOS       |
                              DLG_CANVASRESIZE_SHOW_VERTZPOS       |
                              DLG_CANVASRESIZE_SHOW_BACKCOLOR      |
                              DLG_CANVASRESIZE_SHOW_KEEPASPECT     ;
      
   DlgParams.nCurrentWidth  = BITMAPWIDTH  ( pBitmap ) ;
   DlgParams.nCurrentHeight = BITMAPHEIGHT ( pBitmap ) ;
   DlgParams.crBkgnd        = RGB ( 255, 255, 255 ) ;
   nRet = L_DlgInit ( DLG_INIT_COLOR ) ;
   if(nRet != SUCCESS && nRet != ERROR_DLG_ALREADYINITIATED)
      return nRet;
   nRet = L_DlgCanvasResize ( hWnd, &DlgParams ) ;
   L_DlgFree ( ) ;
   if ( SUCCESS_DLG_OK == nRet )
   {
      BITMAPHANDLE BitmapTemp ;
      nRet = L_CreateBitmap(&BitmapTemp,
                     sizeof(BITMAPHANDLE),
                     TYPE_CONV,
                     DlgParams.nNewWidth,
                     DlgParams.nNewHeight,
                     pBitmap->BitsPerPixel,
                     pBitmap->Order,
                     NULL,
                     pBitmap->ViewPerspective,
                     NULL,
                     0 ) ;
      if(nRet != SUCCESS)
         return nRet;
      nRet = L_CombineBitmap(&BitmapTemp,
                      DlgParams.ptTopLeft.x,
                      DlgParams.ptTopLeft.y,
                      BITMAPWIDTH ( pBitmap ),
                      BITMAPHEIGHT ( pBitmap ),
                      pBitmap,
                      0,
                      0,
                      CB_OP_AND | CB_DST_1 ) ;
      if(nRet != SUCCESS)
         return nRet;
      nRet = L_CopyBitmap(pBitmap, &BitmapTemp, sizeof(BITMAPHANDLE)) ;
      if(nRet != SUCCESS)
         return nRet;
      L_FreeBitmap( &BitmapTemp ) ;
   }
   else if(nRet < 1)
      return nRet;
   return SUCCESS;
}