遍历 ListView 控件项的 Win32 API
创始人
2024-12-02 03:00:14
0

以下是一个遍历 ListView 控件项的 Win32 API 的解决方法,并包含一个简单的代码示例:

  1. 使用 ListView 控件的相关 Win32 API 函数:

    • ListView_GetItemCount:获取 ListView 控件中的项数。
    • ListView_GetItemText:获取 ListView 控件中指定项和子项的文本。
    • ListView_GetNextItem:获取 ListView 控件中下一个项的索引。
    • ListView_SetItemState:设置 ListView 控件中项的状态。
  2. 示例代码:

#include 
#include 

#define ID_LISTVIEW 1001

LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
    static HWND hwndListView;

    switch (msg) {
        case WM_CREATE:
        {
            // 创建 ListView 控件
            hwndListView = CreateWindow(WC_LISTVIEW, NULL, WS_VISIBLE | WS_CHILD | LVS_REPORT,
                                        10, 10, 300, 200, hwnd, (HMENU)ID_LISTVIEW, NULL, NULL);

            // 添加列
            LVCOLUMN lvColumn;
            lvColumn.mask = LVCF_TEXT | LVCF_WIDTH;
            lvColumn.pszText = "Column 1";
            lvColumn.cx = 100;
            ListView_InsertColumn(hwndListView, 0, &lvColumn);

            // 添加项
            LVITEM lvItem;
            lvItem.mask = LVIF_TEXT;
            lvItem.pszText = "Item 1";
            lvItem.iItem = 0;
            lvItem.iSubItem = 0;
            ListView_InsertItem(hwndListView, &lvItem);

            lvItem.pszText = "Item 2";
            lvItem.iItem = 1;
            ListView_InsertItem(hwndListView, &lvItem);

            lvItem.pszText = "Item 3";
            lvItem.iItem = 2;
            ListView_InsertItem(hwndListView, &lvItem);

            break;
        }
        case WM_COMMAND:
        {
            int wmId = LOWORD(wParam);
            switch (wmId) {
                case ID_LISTVIEW:
                {
                    if (HIWORD(wParam) == LBN_SELCHANGE) {
                        // 遍历 ListView 控件的项
                        int itemCount = ListView_GetItemCount(hwndListView);
                        for (int i = 0; i < itemCount; i++) {
                            LVITEM lvItem;
                            lvItem.mask = LVIF_TEXT | LVIF_STATE;
                            lvItem.iItem = i;
                            lvItem.iSubItem = 0;
                            lvItem.pszText = new char[MAX_PATH];
                            lvItem.cchTextMax = MAX_PATH;
                            lvItem.stateMask = LVIS_SELECTED;
                            ListView_GetItem(hwndListView, &lvItem);

                            if (lvItem.state & LVIS_SELECTED) {
                                char text[MAX_PATH];
                                ListView_GetItemText(hwndListView, i, 0, text, MAX_PATH);
                                // 输出选中项的文本
                                OutputDebugString(text);
                            }

                            delete[] lvItem.pszText;
                        }
                    }
                    break;
                }
            }
            break;
        }
        case WM_DESTROY:
        {
            PostQuitMessage(0);
            break;
        }
        default:
            return DefWindowProc(hwnd, msg, wParam, lParam);
    }
    return 0;
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
    WNDCLASSEX wcex;
    wcex.cbSize = sizeof(WNDCLASSEX);
    wcex.style = CS_HREDRAW | CS_VREDRAW;
    wcex.lpfnWndProc = WndProc;
    wcex.cbClsExtra = 0;
    wcex.cbWndExtra = 0;
    wcex.hInstance = hInstance;
    wcex.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
    wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
    wcex.lpszMenuName = NULL;
    wcex.lpszClassName = "MyClass";
    wcex.hIconSm = LoadIcon(NULL, IDI_APPLICATION);

    RegisterClassEx(&wcex);

    HWND hwnd = CreateWindow("MyClass", "ListView Example", WS_OVERLAPPEDWINDOW,
                             CW_USEDEFAULT, CW_USEDEFAULT, 400, 300, NULL, NULL, hInstance, NULL);

    ShowWindow(hwnd, nCmdShow);
    UpdateWindow(hwnd);

    MSG msg;
    while (GetMessage(&msg, NULL, 0, 0)) {
        TranslateMessage(&msg);
        DispatchMessage(&msg

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