Windows 程序设计学习笔记二：Unicode

要点：TCHAR，TEXT，GetSystemMetrics（SM_CXSCREEN、SM_CYSCREEN）（其中就是获取屏幕分辨率的方法），_vsntprintf

 

可变参数的使用方法（暂时做个简单的了解吧），可变参数的函数的类型必须是CDECL。

 

 int sprintf (char * szBuffer, const char * szFormat, ...) { int iReturn; va_list pArgs; va_start (pArgs, szFormat); iReturn = vsprintf (szBuffer, szFormat, pArgs); va_end (pArgs); return iReturn;}

完整代码：

/*--------------------------------------------------------------------------- SCRNSIZE.C -- Displays screen size in a message box (c) Charles Petzold, 1998----------------------------------------------------------------------------*/ #include <windows.h>#include <tchar.h> #include <stdio.h>int CDECL MessageBoxPrintf (TCHAR * szCaption, TCHAR * szFormat, ...);int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int iCmdShow){int cxScreen, cyScreen;cxScreen = GetSystemMetrics(SM_CXSCREEN);cyScreen = GetSystemMetrics(SM_CYSCREEN);MessageBoxPrintf(TEXT("ScrnSize"), TEXT("The screen is %i pixels wide by %i pixels high.") , cxScreen, cyScreen);return 0;}int CDECL MessageBoxPrintf(TCHAR * szCaption, TCHAR * szFormat, ...){TCHAR szBuffer[1024];va_list pArgList;va_start(pArgList, szFormat);_vsntprintf(szBuffer, sizeof(szBuffer) / sizeof(TCHAR) , szFormat, pArgList);va_end (pArgList);return MessageBox(NULL, szBuffer, szCaption, 0);}