C# Signature:
[DllImport("user32.dll")]
static extern bool WinHelp(IntPtr hWndMain, string lpszHelp, uint uCommand,
uint dwData);
User-Defined Types:
None.
Notes:
Here are the constants defined in Winver.h:
// Commands to pass to WinHelp()
const uint HELP_CONTEXT = 0x0001; /* Display topic in ulTopic */
const uint HELP_QUIT = 0x0002; /* Terminate help */
const uint HELP_INDEX = 0x0003; /* Display index */
const uint HELP_CONTENTS = 0x0003;
const uint HELP_HELPONHELP = 0x0004; /* Display help on using help */
const uint HELP_SETINDEX = 0x0005; /* Set current Index for multi index help */
const uint HELP_SETCONTENTS = 0x0005;
const uint HELP_CONTEXTPOPUP = 0x0008;
const uint HELP_FORCEFILE = 0x0009;
const uint HELP_KEY = 0x0101; /* Display topic for keyword in offabData */
const uint HELP_COMMAND = 0x0102;
const uint HELP_PARTIALKEY = 0x0105;
const uint HELP_MULTIKEY = 0x0201;
const uint HELP_SETWINPOS = 0x0203;
const uint HELP_CONTEXTMENU = 0x000a;
const uint HELP_FINDER = 0x000b;
const uint HELP_WM_HELP = 0x000c;
const uint HELP_SETPOPUP_POS = 0x000d;
const uint HELP_TCARD = 0x8000;
const uint HELP_TCARD_DATA = 0x0010;
const uint HELP_TCARD_OTHER_CALLER = 0x0011;
const uint IDH_NO_HELP = 28440;
const uint IDH_MISSING_CONTEXT = 28441; // Control doesn't have matching help context
const uint IDH_GENERIC_HELP_BUTTON = 28442; // Property sheet help button
const uint IDH_OK = 28443;
const uint IDH_CANCEL = 28444;
const uint IDH_HELP = 28445;
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Sample Code:
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Alternative Managed API:
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