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| 2011-12-04 | 2013-02-24 | ||
| alternative ways to restat windows explorer (martin) | Minor grammer fix (188.192.62.37) | ||
| Line 29: | Line 29: | ||
| Obviously even Windows Explorer (or any other target application, like WinZip) cannot download files from any possible source (particularly it does not know [[SFTP]]/[[SCP]]). | Obviously even Windows Explorer (or any other target application, like WinZip) cannot download files from any possible source (particularly it does not know [[SFTP]]/[[SCP]]). | ||
| - | When the extension is not installed, WinSCP uses trick to allow drag&drop downloads. It tells Windows Explorer that the files are in temporary folder (from where Windows Explorer knows how to get the files) and a moment before the Windows Explorer starts to copy files from there, WinSCP downloads the files there. | + | When the extension is not installed, WinSCP uses a trick to allow drag&drop downloads. It tells Windows Explorer that the files are in temporary folder (from where Windows Explorer knows how to get the files) and a moment before the Windows Explorer starts to copy files from there, WinSCP downloads the files there. |
| - | To allow direct drag&drop downloads, the shell extension was developed. It misuses Windows Explorer CopyHook's. [[&url(mscopyhook)|CopyHook]] is COM object (DLL library) that is called by Windows Explorer whenever directory (not file) is transferred within file system. When you drag anything from WinSCP, it creates empty dummy folder in temporary directory and pretends that you as user drag that directory. Once your drop it to Windows Explorer, it calls the CopyHook's (including the WinSCP shell extension), telling it what and where was dragged. This way WinSCP knows the actual destination. It cancels the drag&drop operation, so the dummy directory is not copied by Windows Explorer and transfers your actual selection to now-known destination. | + | To allow direct drag&drop downloads, the shell extension was developed. It misuses Windows Explorer CopyHook's. [[&url(mscopyhook)|CopyHook]] is a COM object (DLL library) that is called by Windows Explorer whenever directory (not file) is transferred within file system. When you drag anything from WinSCP, it creates empty dummy folder in temporary directory and pretends that you as user drag that directory. Once your drop it to Windows Explorer, it calls the CopyHook's (including the WinSCP shell extension), telling it what and where was dragged. This way WinSCP knows the actual destination. It cancels the drag&drop operation, so the dummy directory is not copied by Windows Explorer and transfers your actual selection to now-known destination. |
| This on the other hand explains why with the extension you cannot drag files to any other application except for the Windows Explorer. No other application would call the CopyHook. | This on the other hand explains why with the extension you cannot drag files to any other application except for the Windows Explorer. No other application would call the CopyHook. | ||