GDI+ getting started

GDI+

Class-based API for C/C++ Windows Graphics Device Interface

(GDI) Device-independent applications Services

1) 2D vector graphics– Drawing primitives

2) Imaging– Bitmap

3) Typography– Display of text

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Setup Header file– #include <gdiplus.h> Linking library– #pragma comment (lib, “gdiplus.lib”) Namespace– using namespace Gdiplus; Initialization

GdiplusStartupInput gdiplusStartupInput;

ULONG_PTR gdiplusToken;

GdiplusStartup (&gdiplusToken, &gdiplusStartupInput, NULL);

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Pen

Graphics graphics (hdc);

DrawLine

Pen pen (Color (255, 255, 0, 0));graphics.DrawLine (&pen, 20, 10, 300, 100);

DrawRectangle

Pen blackPen (Color (255, 0, 0, 255), 5);graphics.DrawRectangle (&blackPen, 10, 100, 100, 50);

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Pen

DrawPath

GraphicsPath path;Pen penJoin (Color (255, 0, 255, 0), 25);

path.StartFigure ();path.AddLine (Point (100, 200), Point (200,

200));path.AddLine (Point (200, 200), Point (200,

300));

graphics.DrawPath (&penJoin, &path);

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BrushGraphics graphics (hdc);

SolidBrush solidBrush (Color (255, 255, 0, 0));graphics.FillEllipse (&solidBrush, 10, 10, 100, 60);

Image image (L"Glass.bmp");TextureBrush tBrush (&image);tBrush.SetTransform (&Matrix (75.0/128.0, 0.0f, 0.0f, 75.0/128.0, 0.0f, 0.0f));graphics.FillRectangle (&tBrush, 0, 150, 150, 250);

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StringGraphics graphics (hdc);SolidBrush brush (Color (255, 0, 0, 255));

FontFamily family (L“Arial");Font font

(&family, 24, FontStyleRegular, UnitPixel);

PointF pointF (10.0f, 20.0f);

graphics.DrawString (L"Hello World!", -1, &font, pointF, &brush);

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PlayCap sample

Introduction

Based on Win32 API DirectShow API GDI+ API

IDE Visual C++ 2005 Express Platform SDK LNK1104: cannot open file 'atlthunk.lib'

(www.codeproject.com/wtl/WTLExpress.asp)

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DirectShow Capture and playback of multimedia

streams for a variety of formats A media-streaming architecture

You can download Platform SDK or previous

DirectX SDK from our course webpage

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Setup

Header file– #include <Dshow.h>

Linking library– #pragma comment (lib, “Strmiids.lib”)

Set the path in your IDE Platform SDK DirectX SDK

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Writing DirectShow

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Your Job

In HRESULT ProcessBuffer (HDC hDC) Write a simple image processing

program to scan pBuffer. The information (size, RGB, ..) of

pBuffer is stored in pInfo->bmiHeader.

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