DlgProcHWND

DlgProcHWND is a callback function in the Windows API. It is used by a dialog box procedure to process messages sent to the dialog box. The function receives a handle to the dialog box, a message identifier, a window parameter, and a long parameter. The specific parameters depend on the message being processed.

When a dialog box is created, the system sends various messages to its DlgProcHWND function. These messages inform the dialog box procedure about events such as initialization, command notifications from controls, or the need to paint the dialog box. The DlgProcHWND function is responsible for responding to these messages appropriately.

A common task for DlgProcHWND is to handle user input. For example, when a button is clicked, the dialog box procedure receives a WM_COMMAND message. The DlgProcHWND function then determines which button was clicked and executes the corresponding action. It can also manage the state of controls within the dialog, such as enabling or disabling edit boxes or checking radio buttons.

The DlgProcHWND function typically returns a boolean value. A return value of TRUE indicates that the message has been processed. A return value of FALSE means that the message has not been processed and should be passed on to the default dialog box procedure for further handling. This allows for customization of dialog box behavior while still preserving standard functionality.