如何使用 Buddy Windows

通过将其他控件设置为跟踪条的好友窗口，可以自动将这些控件作为标签定位在跟踪条的两端。

下图显示了一个水平和一个垂直跟踪条，两个跟踪条都拥有作为合作者窗口的静态控件。

需要了解的事项

技术

• Windows 控件

先决条件

• C/C++
• Windows 用户界面编程

说明

使用合作者窗口

以下代码示例创建了如图所示的合作者窗口。

void LabelTrackbarsWithBuddies(HWND hDlg)
{
    HWND hwndTrackbar;
    HWND hwndBuddy;
    
    const int staticWidth   = 50;
    const int staticHeight  = 20;

//======================================================
// For horizontal Trackbar.

    hwndTrackbar = GetDlgItem(hDlg, IDC_SLIDER1);

    hwndBuddy = CreateWindowEx(0, L"STATIC", L"Left", SS_RIGHT | WS_CHILD | WS_VISIBLE, 
                                    0, 0, staticWidth, staticHeight, hDlg, NULL, g_hInst, NULL);
                                    
    SendMessage(hwndTrackbar, TBM_SETBUDDY, (WPARAM)TRUE, (LPARAM)hwndBuddy);
    
    //-------------------------------------------------

    hwndBuddy = CreateWindowEx(0, L"STATIC", L"Right", SS_LEFT | WS_CHILD | WS_VISIBLE, 
                               0, 0, staticWidth, staticHeight, hDlg, NULL, g_hInst, NULL);
                                
    SendMessage(hwndTrackbar, TBM_SETBUDDY, (WPARAM)FALSE, (LPARAM)hwndBuddy);
    
//======================================================    
// For vertical Trackbar.
    
    hwndTrackbar = GetDlgItem(hDlg, IDC_SLIDER2);

    hwndBuddy = CreateWindowEx(0, L"STATIC", L"Top", SS_CENTER | WS_CHILD | WS_VISIBLE, 
                               0, 0, staticWidth, staticHeight, hDlg, NULL, g_hInst, NULL);
                               
    SendMessage(hwndTrackbar, TBM_SETBUDDY, (WPARAM)TRUE, (LPARAM)hwndBuddy);

    //-------------------------------------------------

    hwndBuddy = CreateWindowEx(0, L"STATIC", L"Bottom", SS_CENTER | WS_CHILD | WS_VISIBLE, 
                               0, 0, staticWidth, staticHeight, hDlg, NULL, g_hInst, NULL);
                               
    SendMessage(hwndTrackbar, TBM_SETBUDDY, (WPARAM)FALSE, (LPARAM)hwndBuddy);
}

注解

IDC_SLIDER1 和 IDC_SLIDER2 是在资源编辑器中创建的跟踪条。

相关主题

使用跟踪条控件