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c#.netwindows-shellwindows-explorerwindows-api-code-pack

How to get large thumbnails in hosted Explorer browser control?

Using the good old Windows API Code Pack to host an Explorer view inside my WinForms application, I want to programmatically force a large thumbnail view (Windows 8) like this:

enter image description here

(Large thumbnails, option checked)

Unfortunately, no matter which parameter from the FOLDERVIEWMODE enumeration I pass to the IFolderView::SetCurrentViewMode method, all I can achieve is this:

enter image description here

(Small thumbnails, option not checked)

Therefore my question:

Which method(s) could I possibly use to always force the large thumbnails mode in my hosted Explorer browser control?

Solution

  • Comes out that on my system the solution was to apply the following settings:

    (With the Windows API Code Pack wrappers, I had to do two function calls; in real-life, one call to the IFolderView2::SetViewModeAndIconSize method would be sufficient).

    After setting these values, the checkbox in my 2nd screenshot automatically was checked.

    I'll assume that this may behave different on different systems. I'll still have to do some testing on this.