Displaying animated images on FoxPro form with BitBlt and StretchBlt functions -- Visual FoxPro : Using Win32 (WinAPI) Functions


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	ChangeDisplaySettings
	CreateCompatibleDC
	CreateDC
	DeleteDC
	DeleteObject
	EnumDisplayDevices
	EnumDisplaySettings
	GetDC
	GetDeviceCaps
	GetObject
	GetObjectType
	ReleaseDC
	SelectObject


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Displaying animated images on FoxPro form with BitBlt and StretchBlt functions

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Scrolling text on the form vertically (a movie cast)

Shaking VFP form controls

Playing AVI on _screen

Form Magnifier


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4057 bytes
Created: 2002-12-28 18:40:50
Modified: 2009-01-03 15:26:33
Visits in 7 days: 107

Listed functions:

BitBlt
CreateCompatibleDC
DeleteDC
DeleteObject
GetDesktopWindow
GetFocus
GetObject
GetWindowDC
LoadImage
ReleaseDC
SelectObject
StretchBlt

My comment:

The Timer control works as a projector, retrieving frames from the bitmap, which is selected into memory device context. Obviuosly it takes a small fraction of time and does not degrade performance too much.

Though you must understand that the Timer is in the same process and thread as the whole FoxPro application. That means it can stop or slow down while there is another time consuming operation around.

Word Index links for this example:

memory device context

scrolling

Timer Control

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