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WM_TCARD

0x52

Sent to an application that has initiated a training card with Microsoft Windows Help. The message informs the application when the user clicks an authorable button. An application initiates a training card by specifying the HELP_TCARD command in a call to the WinHelp function.

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    WindowInteropHelper winHelp = new WindowInteropHelper(target);

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Then use winHelp.Handle insted of GetActiveWindowHandle().

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Summary

Enumeration comtaining WinHelpCommands - Commands for Windhelp

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///<Summary>Commands to pass to WinHelp()</Summary>

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enum WinHelpCommands : uint

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'''<Summary>Commands to pass to WinHelp()</Summary>

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Public Enum WinHelpCommands As UInteger

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Public Enum WinHelpCommands

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Documentation

[WinHelpCommands] on MSDN

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    /// Sent to an application that has initiated a training card with Microsoft Windows Help. The message informs the application when the user clicks an authorable button. An application initiates a training card by specifying the HELP_TCARD command in a call to the WinHelp function.

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    '''Sent to an application that has initiated a training card with Microsoft Windows Help. The message informs the application when the user clicks an authorable button. An application initiates a training card by specifying the HELP_TCARD command in a call to the WinHelp function.

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    /// The child window should pass the message to the parent window procedure, which should call the WinHelp function using the HELP_WM_HELP command.

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    ''' The child window should pass the message to the parent window procedure, which should call the WinHelp function using the HELP_WM_HELP command.

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Summary

Enumeration comtaining WinHelpCommands - Commands for Windhelp

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///<Summary>Commands to pass to WinHelp()</Summary>

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enum WinHelpCommands : uint

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'''<Summary>Commands to pass to WinHelp()</Summary>

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Public Enum WinHelpCommands As UInteger

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Public Enum WinHelpCommands

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Documentation

[WinHelpCommands] on MSDN