BOOL ImageList_DragLeave(
  HWND hwndLock
);

#include <windows.h>
#include <commctrl.h>

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) {
    static HIMAGELIST himlDrag;  // 用于存储拖放的图像列表

    switch (message) {
        case WM_CREATE:
            {
                // 创建图像列表
                HIMAGELIST himlSource = ImageList_Create(16, 16, ILC_COLOR32 | ILC_MASK, 1, 0);
                HICON hIcon = LoadIcon(GetModuleHandle(NULL), IDI_INFORMATION);
                ImageList_AddIcon(himlSource, hIcon);
                DestroyIcon(hIcon);

                // 将图像列表设置为拖放源
                ImageList_BeginDrag(himlSource, 0, 0, 0);

                // 将图像列表保存到全局变量
                himlDrag = himlSource;
            }
            return 0;

        case WM_MOUSEMOVE:
            {
                // 随着鼠标移动，将拖放操作的起始点标记在客户区内
                ImageList_DragEnter(hwnd, LOWORD(lParam), HIWORD(lParam));

                // 更新拖放操作的位置
                ImageList_DragMove(LOWORD(lParam), HIWORD(lParam));
            }
            return 0;

        case WM_LBUTTONUP:
            {
                // 结束拖放操作
                ImageList_EndDrag();
            }
            return 0;

        case WM_DESTROY:
            {
                // 标记离开拖放目标
                ImageList_DragLeave(hwnd);

                // 释放拖放的图像列表
                ImageList_Destroy(himlDrag);
                PostQuitMessage(0);
            }
            return 0;

        default:
            return DefWindowProc(hwnd, message, wParam, lParam);
    }
}

int main() {
    // 初始化 Common Controls
    INITCOMMONCONTROLSEX icex;
    icex.dwSize = sizeof(INITCOMMONCONTROLSEX);
    icex.dwICC = ICC_WIN95_CLASSES; // 或其他需要的标志
    InitCommonControlsEx(&icex);

    // 注册窗口类
    WNDCLASS wc = { 0 };
    wc.lpfnWndProc = WndProc;
    wc.hInstance = GetModuleHandle(NULL);
    wc.lpszClassName = L"ImageListDragExample";
    RegisterClass(&wc);

    // 创建窗口
    HWND hwnd = CreateWindow(
        L"ImageListDragExample", L"ImageList Drag Example",
        WS_OVERLAPPEDWINDOW | WS_VISIBLE,
        CW_USEDEFAULT, CW_USEDEFAULT, 400, 200,
        NULL, NULL, GetModuleHandle(NULL), NULL
    );

    if (hwnd == NULL) {
        MessageBox(NULL, L"Window creation failed!", L"Error", MB_ICONERROR);
        return 1;
    }

    // 消息循环
    MSG msg;
    while (GetMessage(&msg, NULL, 0, 0)) {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    return 0;
}