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SysTray.pbl (28672, 1999-05-17)
SysTray.ico (766, 1999-05-13)
下载使用说明.htm (1488, 2004-08-30)

This program demonstrates how we can use a Windows system tray in our own PowerBuilder applications without a need for a callback function. The uCallbackMessage parameter of a Shell_NotifyIcon Windows API Function is usually a user-defined message. However, we can also use a message that PowerBuilder automatically handles as an Event - the MouseMove message. The xPos parameter of this event contains the action. The idea for this approach came from the program written by Matt Hart in VisualBasic according to the tip from http://www.windx.com and posted to http://matthart.com as a freeware. I tested the folowing values for Mod (xPos, 256) in the MoueMove event: Left MouseDown: 41, 84 Left MouseUp: 46, 88 Left DoubleClick 50, 91 Right MouseDown: 55, 95 Right MouseUp: 59, 99 Right DoubleClick: ***, 102 The reason for having two different values for each event is a different system font size selected. Listed values correspond to Windows NT small font and large font. If you find any additional values on Windows 95/*** or if you have any other suggestions please send me a mail to bojan.jurca@hermes.si. Bojan Jurca, 1999 ************************************************************* This software is FREEWARE. You may use it as you see fit for your own projects but you may not re-sell the original or the source code. If you redistribute it you must include this disclaimer. No warranty express or implied, is given as to the use of this program. Use at your own risk. *************************************************************

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