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POHow do I stop an extra context menu from showing up when I select an option from a context menu in VB6?
 

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  1. POHow do I stop an extra context menu from showing up when I select an option from a context menu in VB6?
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    <p>I am maintaining an application with a VB6 form that contains a ComponentOne VSFlexGrid 7.0. We have a custom context menu that allows users to perform some specialized copy-and-paste operations. Recently, we have encountered the following issue:</p> <ol> <li>Highlight some text in one of the cells.</li> <li>Right-click in the cell, with the text still highlighted.</li> <li>Select one of the context menu options.</li> <li>The requested context menu operation occurs.</li> <li>Another context menu similar to the one shown <a href="http://www.msfn.org/board/topic/125987-open-ime-right-to-left-reading-order-option-i/" rel="nofollow">here</a>, with options such as "Right to left reading order", "Open IME", and "Reconversion", is displayed.</li> </ol> <p>How do I make this second context menu go away? I have tried the method that <a href="http://support.microsoft.com/kb/170570/EN-US" rel="nofollow">the Microsoft Knowledge Base describes</a> with no luck so far. My WindowProc function is below:</p> <pre><code>Function WindowProc(ByVal hw As Long, _ ByVal uMsg As Long, _ ByVal wParam As Long, _ ByVal lParam As Long) As Long Select Case uMsg Case WM_RBUTTONUP frmMain.PopupMenu frmMain.mnuPopUp Case Else WindowProc = CallWindowProc(lpPrevWndProc, hw, _ uMsg, wParam, lParam) End Select End Function </code></pre> <p>After the copy operation happens, the uMsg values that I see are 15 (WM_PAINT) and 32 (WM_SETCURSOR). I have also noticed that a form-level MouseUp event fires when I have not highlighted text in the cell, but it does not fire when I have highlighted text in the cell.</p> <p>Could someone with deeper knowledge of VB6 and/or ComponentOne please give me more details about what sequence of events takes place, and how to keep this extra context menu from showing up?</p>
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    1. CODo you have `BeforeMouseDown` event on the grid? Try setting `Cancel = True` if right clicking.
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      1. POHow do I stop an extra context menu from showing up when I select an option from a context menu in VB6?
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    2. CO@wqw: Yes, setting Cancel = True does hide the extra context menu. BeforeMouseDown seems like a very early time to do it, though. Would it still work for an event that would fire later, like MouseDown or MouseUp?
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    3. COI think MouseDown/Up will not fire, but there is no way to cancel `WM_RBUTTONUP` your menu is hooked on. `WM_CONTEXTMENU` would be a more civilized way to do it, but it's implemented by `DefWindowProc` and there is no requirement for a custom control to call it so your grid might not support it -- you have to test it.
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