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A ComboBox of Type DropDownCombo Having Drag and Drop Facility

Posted on 2003-11-05
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Last Modified: 2013-11-20
Can I have  a ComboBox in VC++ with Drag and Drop Facility of its elements and having type DropDown Combo not Simple?
if it is developed as an Activex Component Where can i Find it and how do i implement it in my Project.
Suhas
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Question by:SuhasBS
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DanRollins earned 130 total points
ID: 9693143
If you need to drop files, just

1) Add a regular (dropdown) combo box to your dialog box.  In the properties box, clcik the "Extended Styles" tab and put a checkmnark in the "Accept files" checkbox.

2) Use the ClassWizard to derive a new class, say CMyComboBox from the standard CComboBox control.  

3) To that class, add a handler for WM_DROPFILES.  Make it so:

void CMyComboBox::OnDropFiles(HDROP hDropInfo)
{
      MessageBox("A file was dropped!");
      CComboBox::OnDropFiles(hDropInfo);
}

4) Use the ClassWizard to create a control-type variable for the combobox.  You can select the new class (CMyComboBox) from the list!

=-=-=-=-=-=-=-=-=-=-=-=-=
If you can make it that far, I'll tell you all about handling the HDROP parameter so you can figure out what was dropped.

-- Dan
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