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Questionread text file Pin
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QuestionWM_DEVICECHANGE sets wParam to unexpected value of 7 - how to troubleshoot this? Pin
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AnswerRe: WM_DEVICECHANGE sets wParam to unexpected value of 7 - how to troubleshoot this? Pin
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GeneralRe: WM_DEVICECHANGE sets wParam to unexpected value of 7 - how to troubleshoot this? Pin
Vaclav_Sal7-Dec-12 6:58
memberVaclav_Sal7-Dec-12 6:58 
Thank you, obviously I have not look all the way to the end of the page!

However, what the dickens is " ring3 people" note talking about?
So when "new node is detected / chaged" is not same as

DBT_DEVICEARRIVAL A device has been inserted and is now available.


Mr MS - I am not sure this note is in English!

and to get the device more work is necessary???
I am not sure I can figure that out, getting tired of this USB mess.





/*
* Message = WM_DEVICECHANGE
* wParam = DBT_DEVNODES_CHANGED
* lParam = 0
*
* send when configmg finished a process tree batch. Some devnodes
* may have been added or removed. This is used by ring3 people which
* need to be refreshed whenever any devnode changed occur (like
* device manager). People specific to certain devices should use
* DBT_DEVICE* instead.
*/
#define DBT_DEVNODES_CHANGED 0x0007
AnswerRe: WM_DEVICECHANGE sets wParam to unexpected value of 7 - how to troubleshoot this? Pin
Richard MacCutchan7-Dec-12 21:51
mvpRichard MacCutchan7-Dec-12 21:51 
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AnswerRe: WM_DEVICECHANGE sets wParam to unexpected value of 7 - how to troubleshoot this? Pin
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