Dialog box problems with screen saver

Posted on 2001-06-11
Medium Priority
Last Modified: 2011-09-20

I have an application that runs as a daemon service in window desktop. When the user left their desktop unattended, one of my written screen saver will pop up and when the user hit enter a password dialog box will come up for screensaver deactivation purpose.

Some issues are encountered,

1) The password dialog box is not a foreground window when it pop up, hence keystrokes cannot be captured. If I use the SetForeGroundWindow API, it is not reliable, sometimes user may accidentally hit the mouse and dialog went out of focus.

2) I try checking "System Modal" flag in the password dialog form, but it is not useful either.

3) Worst still, I have set the screensaver as the topmost form and yet Microsoft Outlook reminder message box can still pop on top of it causing some security issues.

Pls give me some suggestions on overcoming this problems. Thanks.

Fyi. The dialog box is created using the DialogBox(..., DlgProc). There is no CDialog class.
Question by:oohchild
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Expert Comment

ID: 6176525
[Note this is a windows topic question not a C++ question]

Assuming the dialog is created from your running screensaver process then I can't understand why there should be a problem.

Could you clarify what you mean by a 'daemon service'?

Also is this under NT?


Expert Comment

ID: 6176553
Try to call:
SetWindowPos(&(CWnd::wndTopMost), 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE)

Expert Comment

ID: 6176558
Or try this without CWnd class:
SetWindowPos(hWnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE)
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Author Comment

ID: 6179668
Nope it is running in Win95. The dialog box is not created from the screen saver but from another application (say App B). App B invokes the screensaver when system idle time out. Suppose user hit enter screensaver, screensaver will post message to AppB to invoke the dialog box. The issue is this Dialog box is not on foreground window hence cannot accept password.  

Btw, is the SetWindowPos meant for the 3rd question?
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ID: 6814522
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Accepted Solution

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ID: 6833260
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ID: 6833298
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