Using Tooltip Controls

最新推荐文章于 2024-09-02 18:36:10 发布

翻译最新推荐文章于 2024-09-02 18:36:10 发布 · 446 阅读

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#dialog #null #ttf #tts #parameters #function

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本文介绍了一个用于Windows应用程序的功能函数，该函数可以为指定的对话框项创建工具提示。通过传递对话框项ID、窗口句柄及提示文本，可以轻松地为对话框中的元素添加描述性的工具提示。

pos">http://msdn.microsoft.com/zh-cn/library/bb760252(en-us,VS.85).aspx#tooltips_sample_inplace_pos

The following example function creates a tooltip and associates it with the control whose resource ID is passed in.

// Description:
//   Creates a tooltip for an item in a dialog box. 
// Parameters:
//   idTool - identifier of an dialog box item.
//   nDlg - window handle of the dialog box.
//   pszText - string to use as the tooltip text.
// Returns:
//   The handle to the tooltip.
//
HWND CreateToolTip(int toolID, HWND hDlg, PTSTR pszText)
{
    if (!toolID || !hDlg || !pszText)
    {
        return FALSE;
    }
    // Get the window of the tool.
    HWND hwndTool = GetDlgItem(hDlg, toolID);
    
    // Create the tooltip. g_hInst is the global instance handle.
    HWND hwndTip = CreateWindowEx(NULL, TOOLTIPS_CLASS, NULL,
                              WS_POPUP |TTS_ALWAYSTIP | TTS_BALLOON,
                              CW_USEDEFAULT, CW_USEDEFAULT,
                              CW_USEDEFAULT, CW_USEDEFAULT,
                              hDlg, NULL, 
                              g_hInst, NULL);
    
   if (!hwndTool || !hwndTip)
   {
       return (HWND)NULL;
   }                              
                              
    // Associate the tooltip with the tool.
    TOOLINFO toolInfo = { 0 };
    toolInfo.cbSize = sizeof(toolInfo);
    toolInfo.hwnd = hDlg;
    toolInfo.uFlags = TTF_IDISHWND | TTF_SUBCLASS;
    toolInfo.uId = (UINT_PTR)hwndTool;
    toolInfo.lpszText = pszText;
    SendMessage(hwndTip, TTM_ADDTOOL, 0, (LPARAM)&toolInfo);

    return hwndTip;
}