L_DlgCanvasResize

#include "l_bitmap.h"

L_LTDLG_API L_INT L_DlgCanvasResize(hWndOwner, pDlgParams)

Displays the Canvas Resize dialog box.

Parameters

L_HWND hWndOwner

Handle of the window which owns the dialog.

LPCANVASRESIZEDLGPARAMS 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

Value Meaning
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

See Also

Functions

Topics

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, 0) ; 
 
      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; 
} 
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