edrlib.c

来自「这是Windows程序设计（第五版）第21章-第23章的源代码！」· C语言 代码 · 共 40 行

/*-------------------------------------------------
   EDRLIB.C -- Easy Drawing Routine Library module
               (c) Charles Petzold, 1998
  -------------------------------------------------*/

#include <windows.h>
#include "edrlib.h"

int WINAPI DllMain (HINSTANCE hInstance, DWORD fdwReason, PVOID pvReserved)
{
     return TRUE ;
}

EXPORT BOOL CALLBACK EdrCenterTextA (HDC hdc, PRECT prc, PCSTR pString)
{
     int  iLength ;
     SIZE size ;

     iLength = lstrlenA (pString) ;

     GetTextExtentPoint32A (hdc, pString, iLength, &size) ;

     return TextOutA (hdc, (prc->right - prc->left - size.cx) / 2,
                           (prc->bottom - prc->top - size.cy) / 2,
                      pString, iLength) ;
}

EXPORT BOOL CALLBACK EdrCenterTextW (HDC hdc, PRECT prc, PCWSTR pString)
{
     int  iLength ;
     SIZE size ;

     iLength = lstrlenW (pString) ;

     GetTextExtentPoint32W (hdc, pString, iLength, &size) ;

     return TextOutW (hdc, (prc->right - prc->left - size.cx) / 2,
                           (prc->bottom - prc->top - size.cy) / 2,
                      pString, iLength) ;
}