References ▼
#include "l_bitmap.h"
L_LTDLG_API L_INT L_DlgCanvasResize(hWndOwner, pDlgParams)
Displays the Canvas Resize dialog box.
Handle of the window which owns the dialog.
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.
| 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. |
Required DLLs and Libraries
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;}