LB_GETCURSEL获取索引失败的原因有哪些

-1有可能是指针，如果是，要获取指针之后，提取指针的内容，以下我贴上代码:

// Testcpp : 定义应用程序的入口点。

//

#include "stdafxh"

#include "Testh"

#define MAX_LOADSTRING 100

HWND hListBox = NULL;

// 全局变量:

HINSTANCE hInst; // 当前实例

TCHAR szTitle[MAX_LOADSTRING]; // 标题栏文本

TCHAR szWindowClass[MAX_LOADSTRING]; // 主窗口类名

// 此代码模块中包含的函数的前向声明:

ATOM MyRegisterClass(HINSTANCE hInstance);

BOOL InitInstance(HINSTANCE, int);

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);

INT_PTR CALLBACK About(HWND, UINT, WPARAM, LPARAM);

int APIENTRY _tWinMain(_In_ HINSTANCE hInstance,

_In_opt_ HINSTANCE hPrevInstance,

_In_ LPTSTR lpCmdLine,

_In_ int nCmdShow)

{

UNREFERENCED_PARAMETER(hPrevInstance);

UNREFERENCED_PARAMETER(lpCmdLine);

// TODO: 在此放置代码。

MSG msg;

HACCEL hAccelTable;

// 初始化全局字符串

LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);

LoadString(hInstance, IDC_TEST, szWindowClass, MAX_LOADSTRING);

MyRegisterClass(hInstance);

// 执行应用程序初始化:

if (!InitInstance (hInstance, nCmdShow))

{

return FALSE;

}

hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_TEST));

// 主消息循环:

while (GetMessage(&msg, NULL, 0, 0))

{

if (!TranslateAccelerator(msghwnd, hAccelTable, &msg))

{

TranslateMessage(&msg);

DispatchMessage(&msg);

}

}

return (int) msgwParam;

}

//

// 函数: MyRegisterClass()

//

// 目的: 注册窗口类。

//

ATOM MyRegisterClass(HINSTANCE hInstance)

{

WNDCLASSEX wcex;

wcexcbSize = sizeof(WNDCLASSEX);

wcexstyle = CS_HREDRAW | CS_VREDRAW;

wcexlpfnWndProc = WndProc;

wcexcbClsExtra = 0;

wcexcbWndExtra = 0;

wcexhInstance = hInstance;

wcexhIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_TEST));

wcexhCursor = LoadCursor(NULL, IDC_ARROW);

wcexhbrBackground = (HBRUSH)(COLOR_WINDOW+1);

wcexlpszMenuName = MAKEINTRESOURCE(IDC_TEST);

wcexlpszClassName = szWindowClass;

wcexhIconSm = LoadIcon(wcexhInstance, MAKEINTRESOURCE(IDI_SMALL));

return RegisterClassEx(&wcex);

}

//

// 函数: InitInstance(HINSTANCE, int)

//

// 目的: 保存实例句柄并创建主窗口

//

// 注释:

//

// 在此函数中，我们在全局变量中保存实例句柄并

// 创建和显示主程序窗口。

//

BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)

{

HWND hWnd;

hInst = hInstance; // 将实例句柄存储在全局变量中

hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,

CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);

if (!hWnd)

{

return FALSE;

}

ShowWindow(hWnd, nCmdShow);

UpdateWindow(hWnd);

return TRUE;

}

//

// 函数: WndProc(HWND, UINT, WPARAM, LPARAM)

//

// 目的: 处理主窗口的消息。

//

// WM_COMMAND - 处理应用程序菜单

// WM_PAINT - 绘制主窗口

// WM_DESTROY - 发送退出消息并返回

//

//

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)

{

int wmId, wmEvent, nCurIndex;

PAINTSTRUCT ps;

HDC hdc;

static TCHAR buf[20] = _T("");

switch (message)

{

case WM_CREATE:

hListBox = CreateWindow(_T("listbox"), NULL, WS_CHILD | WS_VISIBLE | WS_VSCROLL | WS_TABSTOP | LBS_STANDARD ,20, 20, 60, 60, hWnd, (HMENU)10000, (HINSTANCE)GetWindowLong(hWnd, GWL_HINSTANCE), NULL);

SendMessage(hListBox, LB_ADDSTRING, 0, (LPARAM)_T("中国"));

SendMessage(hListBox, LB_ADDSTRING, 0, (LPARAM)_T("美国"));

SendMessage(hListBox, LB_ADDSTRING, 0, (LPARAM)_T("英国"));

break;

case WM_COMMAND:

wmId = LOWORD(wParam);

wmEvent = HIWORD(wParam);

// 分析菜单选择:

switch (wmId)

{

case IDM_ABOUT:

DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);

break;

case IDM_EXIT:

DestroyWindow(hWnd);

break;

case 10000:

if (LBN_SELCHANGE == wmEvent)

{

nCurIndex = SendMessage((HWND)lParam, LB_GETCURSEL, 0, 0);

SendMessage((HWND)lParam, LB_GETTEXT, nCurIndex, (LPARAM)buf);

MessageBox(NULL, buf, _T("提示"), MB_OK);

}

break;

default:

return DefWindowProc(hWnd, message, wParam, lParam);

}

break;

case WM_PAINT:

hdc = BeginPaint(hWnd, &ps);

// TODO: 在此添加任意绘图代码

EndPaint(hWnd, &ps);

break;

case WM_DESTROY:

PostQuitMessage(0);

break;

default:

return DefWindowProc(hWnd, message, wParam, lParam);

}

return 0;

}

// “关于”框的消息处理程序。

INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)

{

UNREFERENCED_PARAMETER(lParam);

switch (message)

{

case WM_INITDIALOG:

return (INT_PTR)TRUE;

case WM_COMMAND:

if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)

{

EndDialog(hDlg, LOWORD(wParam));

return (INT_PTR)TRUE;

}

break;

}

return (INT_PTR)FALSE;

}

建议楼主看看这个代码，重点在于

SendMessage(hListBox, LB_ADDSTRING, 0, (LPARAM)_T("中国"));//列表框内容加上中国

SendMessage(hListBox, LB_ADDSTRING, 0, (LPARAM)_T("美国"));//列表框内容加上美国

SendMessage(hListBox, LB_ADDSTRING, 0, (LPARAM)_T("英国"));//列表框内容加上英国

nCurIndex = SendMessage((HWND)lParam, LB_GETCURSEL, 0, 0);//获取指针

SendMessage((HWND)lParam, LB_GETTEXT, nCurIndex, (LPARAM)buf);//将指针的内容给buf)

MessageBox(NULL, buf, _T("提示"), MB_OK);//跳出提示框显示列表框内容所点击的内容

HACCEL hAccelTable;

hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_WIN32));

while (GetMessage(&msg, NULL, 0, 0))

{

if (!TranslateAccelerator(msghwnd, hAccelTable, &msg))

{

TranslateMessage(&msg);

DispatchMessage(&msg);

}

}

还要建立加速键表资源和相应项,指向菜单,或自定义的ID,

在wm_command或wm_syscommand中处理,和菜单类似

你可以建立默认的win32工程试试,或者是helloworld的win32工程,vs的几个版本应该差的不太多,里面应该含有例子

ATOM MyRegisterClass(HINSTANCE hInstance)//注册窗口类 { WNDCLASSEX wcex;//声明变量 wcexcbSize = sizeof(WNDCLASSEX); //WNDCLASSEX 的大小 wcexstyle = CS_HREDRAW | CS_VREDRAW;//从这个窗口类派生的窗口具有的风格 wcexlpfnWndProc = (WNDPROC)WndProc;//窗口处理函数的指针 wcexcbClsExtra = 0;//指定紧跟在窗口类结构后的附加字节数 wcexcbWndExtra = 0;//指定紧跟在窗口事例后的附加字节数 wcexhInstance = hInstance;//本模块的事例句柄 wcexhIcon = LoadIcon(hInstance, (LPCTSTR)IDI_AAA);//图标的句柄 wcexhCursor = LoadCursor(NULL, IDC_ARROW);//光标的句柄 wcexhbrBackground = (HBRUSH)(COLOR_WINDOW+1);//背景画刷的句柄 wcexlpszMenuName = (LPCSTR)IDC_AAA;//指向菜单的指针 wcexlpszClassName = szWindowClass;//指向类名称的指针 wcexhIconSm = LoadIcon(wcexhInstance, (LPCTSTR)IDI_SMALL);//和窗口类关联的小图标 return RegisterClassEx(&wcex); [D1] //注册窗口类 } BOOL InitInstance(HINSTANCE hInstance, int nCmdShow) { HWND hWnd; hInst = hInstance; // Store instance handle in our global variable hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL); [D2] //创建 if (!hWnd) { return FALSE; } ShowWindow(hWnd, nCmdShow); [D3] //显示窗口 UpdateWindow(hWnd); [D4] //刷新窗口 return TRUE; }

希望采纳

1 LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam , LPARAM 45 lparam)

这里不应该有45, 去掉

2

case WM_DESTROY(0);

去掉(0), ";"号换成":"

3

return DefWindowProc(hwnd,message,wParam,lParm);

lParm 拼写错误,传进的参数是lparam, 同时注意大小写

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