DDraw and Audio

Article
08/28/2006

This code sample is named Donuts2. It is a simple game that demonstrates how to combine DirectDraw and Waveform Audio. Although it demonstrates other DirectX components, it is primarily intended to show how to animate multiple sprites.

Feature Area

DirectDraw

Relevant APIs

BITMAP structure
CreateCompatibleDC function
DDSURFACEDESC structure
GetObject function
IDirectDraw::CreateSurface function
IDirectDrawPalette function
IDirectDrawSurface::GetSurfaceDesc function
IDirectDrawSurface5 interface
PAINTSTRUCT structure
SelectObject function

Usage

To run the code sample

Navigate to the solution file (*.sln), and double-click it. By default, the solution file is copied to the following folder:

C:\Program Files\Windows CE Tools\wce500\Windows Mobile 5.0 Pocket PC SDK\Samples\CPP\Win32\Directx\Ddraw\Donuts2\``Donuts2.sln

Microsoft Visual Studio 2005 launches and loads the solution.
Build the solution (Ctrl+Shift+B).
Deploy the solution (F5).

Using the application

Input is from the keyboard. No other input device is supported.
The commands are listed on the opening screen. All numbers must be entered from the numeric keypad.

Button Commands

Button	Action
Left	Turn left
Right	Turn right
Up	Accelerate forward
Down	Accelerate backward
Application Button 1	Stop
Application Button 2	Shield
Action Fire	Start game
Talk button	Turn audio on/off
End button	Quit
Volume Up	Toggle trailing after-image effect on/off
Volume Down	Toggle frame-rate display on/off

Command-line switches

Switch	Description
e	Use software emulation, not hardware acceleration
t	Test mode, no input required
x	Stress mode, never stop if you can help it
s	Turn sound off/on

Remarks

It is assumed that your mobile device supports DirectDraw.

This code sample requires less than 1 MB of video RAM.

Requirements

Pocket PC SDK: Windows Mobile 5.0 Pocket PC SDK.
Smartphone SDK: Windows Mobile 5.0 Smartphone SDK.
Development Environment: Visual Studio 2005.
ActiveSync: Version 4.0.

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