Download e-book for iPad: Subclassing and Hooking with Visual Basic by Stephen Teilhet

By Stephen Teilhet

ISBN-10: 0596001185

ISBN-13: 9780596001186

Subclassing & Hooking with visible easy bargains builders a targeted technique to customise home windows behavior.Windows is a message-based procedure. each motion you request creates a number of messages to hold out the motion. those messages are handed among gadgets and hold with them info that provides the recipient extra aspect on the way to interpret and act upon the message.With Subclassing and the home windows hooking mechanism ("hooks"), you could manage, adjust, or maybe discard messages sure for different items in the working method, within the technique altering the best way the procedure behaves. What varieties of effects are you able to in achieving utilizing the ability of subclassing and hooking? listed below are quite a few of the chances: make certain whilst a window is being activated or deactivated and reply to this alteration. reveal descriptions of menu goods because the mouse strikes throughout them. Disallow a consumer to maneuver or resize a window. make sure the place the mouse cursor is and reply consequently. be sure while the demonstrate answer has been replaced. video display the method for an extremely low process source . adjust or disallow keystrokes despatched to a window or a regulate. Create an automatic checking out program. ascertain whilst an software is idle.Along with this strength comes accountability; home windows is especially unforgiving if subclassing and hooking are used incorrectly. Subclassing & Hooking with visible easy demonstrates a few of the recommendations for intercepting messages sure for a number of home windows or controls: the intercepted message may be left in its unique country or transformed; afterwards, the message might be despatched to its unique vacation spot or discarded.For either VB 6 and VB.NET builders, Subclassing & Hooking with visible simple opens up a wealth of percentages that regularly will be thoroughly unavailable, or at the least difficult to enforce.

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Subclassing and Hooking with Visual Basic by Stephen Teilhet


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