Win32 ListBox 控件简单Demo

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/*----------------------------------------
2020.10.11, by bo
----------------------------------------*/

#include <windows.h>

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

#define ID_LIST 1

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
static TCHAR szAppName[] = TEXT ("List1") ;
HWND hwnd ;
MSG msg ;
WNDCLASS wndclass ;

wndclass.style = CS_HREDRAW | CS_VREDRAW ;
wndclass.lpfnWndProc = WndProc ;
wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
wndclass.hInstance = hInstance ;
wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ;
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;
wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
wndclass.lpszMenuName = NULL ;
wndclass.lpszClassName = szAppName ;

if (!RegisterClass (&wndclass))
{
MessageBox (NULL, TEXT ("This program requires Windows NT!"),
szAppName, MB_ICONERROR) ;
return 0 ;
}

hwnd = CreateWindow (szAppName, TEXT ("Listbox Demo"),
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT,
200, 200,
NULL, NULL, hInstance, NULL) ;

ShowWindow (hwnd, iCmdShow) ;
UpdateWindow (hwnd) ;

while (GetMessage (&msg, NULL, 0, 0))
{
TranslateMessage (&msg) ;
DispatchMessage (&msg) ;
}
return msg.wParam ;
}

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

static HWND hListBox;
static int value ;
int i;
HINSTANCE hInstance ;
TCHAR szBuffer[100] ;
int iIndex, iLength;
TCHAR * pVarName ;

switch (message)
{
case WM_CREATE :
hListBox = CreateWindow("LISTBOX",
NULL,
//WS_CHILD|WS_VSCROLL | WS_TABSTOP | LBS_STANDARD | LBS_OWNERDRAWFIXED | LBS_HASSTRINGS,
WS_CHILD | WS_VISIBLE | LBS_STANDARD,
30, 20, 60, 80,
hwnd, (HMENU) ID_LIST, hInstance, NULL) ;
//ShowWindow(hListBox,SW_SHOW);
SendMessage(hListBox,LB_ADDSTRING ,0,TEXT("你好"));
SendMessage(hListBox,LB_ADDSTRING ,0,(LPARAM)"我好");
SendMessage(hListBox,LB_ADDSTRING ,0,"他好");

return 0 ;
case WM_COMMAND :
if (LOWORD (wParam) == ID_LIST && HIWORD (wParam) == LBN_SELCHANGE)
{
// Get current selection.
iIndex = SendMessage (hListBox, LB_GETCURSEL, 0, 0) ;
iLength = SendMessage (hListBox, LB_GETTEXTLEN, iIndex, 0) + 1 ;
pVarName = calloc (iLength, sizeof (TCHAR)) ;
SendMessage (hListBox, LB_GETTEXT, iIndex, (LPARAM) pVarName) ;
MessageBox(hwnd,pVarName,"选择的内容",MB_OK);
free (pVarName) ;
}
return 0 ;

case WM_SIZE :
return 0 ;

case WM_DESTROY :
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}

创建ListBox；单击选项弹出消息框显示选择的项；

如果单击了列表框，在收到WM_COMMAND 消息时，使用LOWORD (wParam)取出的是列表框id，使用HIWORD (wParam) 取出的是所产生的列表框消息；

暂时不知道为什么中文显示有问题；