Processing the WM_DESTROYCLIPBOARD Message

A window can process the WM_DESTROYCLIPBOARD message in order to free any resources that it set aside to support delayed rendering. For example the Label application, when copying a label to the clipboard, allocates a local memory object. It then frees this object in response to the WM_DESTROYCLIPBOARD message, as follows.

case WM_DESTROYCLIPBOARD:

if (pboxLocalClip != NULL)

{

LocalFree(pboxLocalClip);

pboxLocalClip = NULL;

}

break;

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