88 lines
2 KiB
C
88 lines
2 KiB
C
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//
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// html help messagebox, requires to be linked with htmlhelp.lib.
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//
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#include "userinit.h"
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#include <Htmlhelp.h>
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#pragma warning(push, 4)
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LPTSTR MSGPARENT_WINDOWCLASS = TEXT("MessageHelpWndClass");
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LRESULT CALLBACK MessageHelpWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
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{
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static LPTSTR szHelpFile = NULL;
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switch (message)
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{
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case WM_HELP:
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HtmlHelp(hWnd, szHelpFile, HH_DISPLAY_TOPIC, 0);
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return TRUE;
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break;
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case WM_CREATE:
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szHelpFile = (LPTSTR)((LPCREATESTRUCT)lParam)->lpCreateParams;
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return DefWindowProc(hWnd, message, wParam, lParam);
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break;
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default:
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return DefWindowProc(hWnd, message, wParam, lParam);
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}
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}
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ATOM RegisterHelpMessageClass(HINSTANCE hInstance)
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{
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WNDCLASSEX wcex;
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ZeroMemory(&wcex, sizeof(WNDCLASSEX));
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wcex.cbSize = sizeof(WNDCLASSEX);
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wcex.hInstance = hInstance;
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wcex.lpszClassName = MSGPARENT_WINDOWCLASS;
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wcex.lpfnWndProc = (WNDPROC)MessageHelpWndProc;
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return RegisterClassEx(&wcex);
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}
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int HelpMessageBox(
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HINSTANCE hInst,
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HWND hWnd, // handle to owner window
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LPCTSTR lpText, // text in message box
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LPCTSTR lpCaption, // message box title
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UINT uType, // message box style
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LPTSTR szHelpLine
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)
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{
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if (!(uType & MB_HELP) || !szHelpLine)
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{
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return MessageBox(hWnd, lpText, lpCaption, uType);
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}
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else
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{
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HWND hWndParent;
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int iReturn;
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//
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// create a window which will process the help message
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//
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RegisterHelpMessageClass(hInst);
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hWndParent = CreateWindow(
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MSGPARENT_WINDOWCLASS,
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NULL,
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WS_OVERLAPPEDWINDOW,
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0,
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0,
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0,
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0,
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hWnd,
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NULL,
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hInst,
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szHelpLine
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);
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iReturn = MessageBox(hWndParent, lpText, lpCaption, uType);
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DestroyWindow(hWndParent);
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return iReturn;
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}
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}
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#pragma warning(pop)
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