输出文字 - windows编程基础

TEXT ("Get System Metrics No. 2"),
WS_OVERLAPPEDWINDOW | WS_VSCROLL,
CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT,
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 int cxChar, cxCaps, cyChar, cyClient, iVscrollPos ;
HDC hdc ;
int i, y ;
PAINTSTRUCT ps ;
TCHAR szBuffer[10] ;
TEXTMETRIC tm ;
switch (message)
{
case WM_CREATE:
hdc = GetDC (hwnd) ;

GetTextMetrics (hdc, &tm) ;
cxChar = tm.tmAveCharWidth ;
cxCaps = (tm.tmPitchAndFamily & 1 3 : 2) * cxChar / 2 ;
cyChar = tm.tmHeight + tm.tmExternalLeading ;

ReleaseDC (hwnd, hdc) ;
SetScrollRange (hwnd, SB_VERT, 0, NUMLINES - 1, FALSE) ;
SetScrollPos (hwnd, SB_VERT, iVscrollPos, TRUE) ;
return 0 ;

case WM_SIZE:
cyClient = HIWORD (lParam) ;
return 0 ;

case WM_VSCROLL:
switch (LOWORD (wParam))
{
case SB_LINEUP:
iVscrollPos -= 1 ;
break ;

case SB_LINEDOWN:
iVscrollPos += 1 ;
break ;

cas

输出文字(三十一)