LDialogImage::DoModalCanvasResize

#include "ltwrappr.h"

virtual L_INT LDialogImage::DoModalCanvasResize(hWndOwner)

HWND hWndOwner;

/* handle of the window which owns the dialog */

Displays the Canvas Resize dialog box.

Parameter

Description

hWndOwner

Handle of the window which owns the dialog.

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

LDialogImage::SetCanvasResizeParams must be called before using this function to set the initial values for the dialog. You can get the updated CANVASRESIZEDLGPARAMS with the values entered by the user through the dialog by using LDialogImage::GetCanvasResizeParams.

The Canvas Resize dialog.

Required DLLs and Libraries

LTDLGIMG
LTDLGKRN
LTDLGUTL
LTDLGCTRL
LTDLGCOM
LTDIS
LTIMGUTL
LTIMGEFX

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:

LBase::EnableCallBack, LDialogBase::EnablePreview, LDialogBase::EnableAutoProcess, LDialogBase::EnableToolbar, LDialogBase::Free, LDialogBase::Initialize, LDialogImage::SetCanvasResizeParams, LDialogImage::GetCanvasResizeParams, LBitmapBase::Create, LBitmapBase::Combine, LBitmapBase::Copy, Class Members

Topics:

Using Imaging Common Dialog

Example

L_INT LDialogImage_DoModalCanvasResizeExample(LBitmap * pBitmap, HWND hWnd)
{
   L_INT nRet;
   LDialogImage DlgImage;
   nRet = LDialogImage::Initialize(DLG_INIT_COLOR );
   if(nRet != SUCCESS)
      return nRet;
   DlgImage.SetBitmap(pBitmap);
   CANVASRESIZEDLGPARAMS DlgParams; 
   memset ( &DlgParams, 0, sizeof ( CANVASRESIZEDLGPARAMS ) ) ;
   DlgParams.uStructSize      = sizeof ( CANVASRESIZEDLGPARAMS ) ;
   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  = pBitmap->GetWidth ();
   DlgParams.nCurrentHeight = pBitmap->GetHeight ();
   DlgParams.crBkgnd        = RGB ( 255, 255, 255 ) ;
   DlgImage.EnableCallBack (FALSE);
   DlgImage.EnablePreview(TRUE);
   DlgImage.EnableAutoProcess(TRUE);
   DlgImage.EnableToolbar(TRUE);
   nRet = DlgImage.SetCanvasResizeParams(&DlgParams) ;
   if(nRet != SUCCESS)
      return nRet;
   nRet = DlgImage.DoModalCanvasResize(hWnd);
   if(nRet < 1)
      return nRet;
   // Gets the updated values for the structure
   nRet = DlgImage.GetCanvasResizeParams(&DlgParams, sizeof(DlgParams)) ;
   if(nRet != SUCCESS)
      return nRet;
   nRet = LDialogImage::Free();
   if(nRet != SUCCESS)
      return nRet;
   return SUCCESS;
}