Retired Document
Important: This sample code may not represent best practices for current development. The project may use deprecated symbols and illustrate technologies and techniques that are no longer recommended.
Source/DrawImage.c
/* |
File: DrawImage.c |
Description: This sample simply draws an image from a file using Graphics Importers. |
Test Sample Image : Sample 1-Snowgum.jpg |
Author: QuickTime Engineering, DTS |
Copyright: © Copyright 1999 - 2002 Apple Computer, Inc. All rights reserved. |
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Change History (most recent first): <2> 4/22/02 released as dts sample code |
<1> 4/1/99 initial release |
*/ |
#include "MacShell.h" |
void DrawImage( void ) |
{ |
OSErr err = noErr; |
Handle hOpenTypeList = NewHandle(0); |
long numTypes = 0; |
FSSpec theFSSpec; |
Rect bounds; |
GraphicsImportComponent importer = 0; |
BuildGraphicsImporterValidFileTypes( hOpenTypeList, &numTypes ); |
HLock( hOpenTypeList ); |
err = GetOneFileWithPreview(numTypes, (OSTypePtr)*hOpenTypeList, &theFSSpec, NULL); |
DisposeHandle( hOpenTypeList ); |
if ( err ) return; |
// locate and open a graphics importer component which can be used to draw the |
// selected file. If a suitable importer is not found the ComponentInstance |
// is set to NULL. |
err = GetGraphicsImporterForFile( &theFSSpec, // specifies the file to be drawn |
&importer ); // pointer to the returned GraphicsImporterComponent |
// get the native size of the image associated with the importer |
err = GraphicsImportGetNaturalBounds( importer, // importer instance |
&bounds ); // returned bounds |
OffsetRect( &bounds, 10, 45 ); |
window = NewCWindow( NULL, &bounds, "\pDraw Image", true, documentProc, (WindowPtr)-1, true, 0); |
// set the graphics port for drawing |
err = GraphicsImportSetGWorld( importer, // importer instance |
GetWindowPort( window ), // destination graphics port or GWorld |
NULL ); // destination GDevice, set to NULL uses GWorlds device |
// draw the image |
err = GraphicsImportDraw( importer ); |
// close the importer instance |
CloseComponent( importer ); |
} |
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