This topic pertains only to application development in C and C++. See DirectDraw Visual Basic Samples.

Description

This program demonstrates DirectDraw animation using overlays.

Path

Source: (SDK root)\Samples\Multimedia\DDraw\Src\Mosquito

Executable: (SDK root)\Samples\Multimedia\DDraw\Bin\Mosquito.exe

User's Guide

To run the Mosquito application, you must have a display adapter that supports overlays. On a computer with overlay support, the program creates a large mosquito that flies around the screen. If your display adapter card doesn't support source color keying for overlays, you'll see an ugly, black, rectangular background around the mosquito.

Some cards have better overlay support in certain resolutions that others. If you know your card has overlay support through DirectDraw, but the Mosquito program is having problems creating or displaying the overlay, try switching to a lower screen resolution or color depth and restarting the application.

Programming Notes

The program creates a complex overlay surface and animates by flipping.