WSEXACCEPTFILES

WSEXACCEPTFILES is a function in the Windows API used to initiate a drag-and-drop operation from a window to the desktop. This function is part of the Windows Shell API and is typically used in applications that need to support file drag-and-drop functionality.

The function prototype is as follows:

BOOL WSEXACCEPTFILES(HWND hWnd, BOOL fAcceptFiles);

hWnd: A handle to the window that will accept the files.

fAcceptFiles: A Boolean value that specifies whether the window will accept files. If this parameter is TRUE, the window will accept files. If it is FALSE, the window will not accept files.

When a window calls WSEXACCEPTFILES with fAcceptFiles set to TRUE, it indicates to the system that the window is prepared to receive files via drag-and-drop. The system then sends WM_DROPFILES messages to the window when files are dropped onto it. The window must handle these messages to process the dropped files.

To use WSEXACCEPTFILES, the application must include the Windows header file and link against the Shell32 library. The function is straightforward to use and is commonly employed in applications that require file drag-and-drop capabilities, such as file managers and editors.

It's important to note that WSEXACCEPTFILES only enables the window to receive files via drag-and-drop. The application is responsible for handling the WM_DROPFILES messages and processing the dropped files accordingly.

In summary, WSEXACCEPTFILES is a simple yet effective function in the Windows API that enables a window to accept files via drag-and-drop. It is a useful tool for developers looking to enhance the user experience in their applications.