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GetOpenFileName (Windows API)

Started by BNY Jul 16, 2008 at 7:39 PM 1 replies 800+ views

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Jul 16, 2008 at 7:39 PM

For a map editor, I need to use the Open File common dialog box. Seems to work fine, but when I use the dialog box and select My Computer, the list pane shows nothing, yet I am able to select disk drives and folders from the drop down list at the top. I couldn't find anything in documentation or online help about why it isn't showing my disk drives, so I suppose this is a good place to ask. This is my filter and set of flags for the OPENFILENAME structure:

openFilename.lpstrFilter = TEXT("Images (.bmp .dib .jpg .png .tga)\0*.bmp;*.dib;*.jpg;*.jpeg;*.png;*.tga\0\0");
openFilename.Flags = OFN_EXPLORER | OFN_FILEMUSTEXIST | OFN_PATHMUSTEXIST | OFN_HIDEREADONLY;

Also, not sure if it matters, but I'm not using a hook procedure.

Jul 16, 2008 at 7:46 PM

Are you using COM by any chance? GetOpenFileName() should only be called from a STA (single-threaded apartment) thread, not a MTA thread.

BNY

Jul 16, 2008 at 9:27 PM

As a matter of fact, I am using COM for some things. The application is also multithreaded, but all the windows programming is in the same thread.

EDIT (again): You were absolutely right. I got it all working now. Thanks!

[Edited by - BNY on July 16, 2008 9:27:25 PM]

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