更新时间:2016-01-06 20:31:42浏览次数:1+次
BYTE btHiByte = HIBYTE(HIWORD(lParam));
bool bIsExtendKey = btHiByte&0x01;
我们用一个布尔值来存储这个位的状态,如果为true则表示是扩展键,否则为非扩展键。下面是程序的运行截图:
#include "windows.h"
#include <tchar.h>
#define MAX 100
TCHAR tip[MAX]=_T("");
// - 项目是Unicode字符集
LRESULT CALLBACK WinProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)
{
HDC hdc;
PAINTSTRUCT ps;
switch (message)
{
case WM_PAINT:
hdc = BeginPaint(hwnd,&ps);
TextOut(hdc,0,0,tip,lstrlen(tip));
EndPaint(hwnd,&ps);
return 0;
case WM_SYSKEYDOWN:
{
BYTE btHiByte = HIBYTE(HIWORD(lParam));
bool bIsExtendKey = btHiByte&0x01;
if (bIsExtendKey)
{
wsprintf(tip,_T("此键为扩展键"));
}
else
{
wsprintf(tip,_T("此键不是扩展键"));
}
InvalidateRect(hwnd,NULL,TRUE);
return 0;
}
case WM_KEYDOWN:
{
BYTE btHiByte = HIBYTE(HIWORD(lParam));
bool bIsExtendKey = btHiByte&0x01;
if (bIsExtendKey)
{
wsprintf(tip,_T("此键为扩展键"));
}
else
{
wsprintf(tip,_T("此键不是扩展键"));
}
InvalidateRect(hwnd,NULL,TRUE);
return 0;
}
case WM_DESTROY:
PostQuitMessage(0);
return 0;
default:
break;//跳出到默认处理
}
return DefWindowProc(hwnd, message, wParam, lParam);
}
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrev,LPSTR lpCmd,int iShow)
{
TCHAR ClassName[] = _T("MyClass");
TCHAR title1[] = _T("C++技术网http://www.cjjjs.com");
WNDCLASS wndClass;
wndClass.cbClsExtra=0;
wndClass.cbWndExtra=0;
wndClass.hbrBackground= (HBRUSH)GetStockObject(WHITE_BRUSH);
wndClass.hCursor=LoadCursor(NULL,IDC_HAND);
wndClass.hIcon=LoadIcon(NULL,IDI_APPLICATION);
wndClass.hInstance = hInstance;
wndClass.lpfnWndProc = WinProc;
wndClass.lpszClassName = ClassName;
wndClass.lpszMenuName=NULL;
wndClass.style=CS_HREDRAW|CS_VREDRAW;
if(!RegisterClass(&wndClass))return 0;
HWND hwnd = CreateWindow(ClassName,title1,WS_OVERLAPPEDWINDOW,0,0,650,400,NULL,NULL,hInstance,NULL);
ShowWindow(hwnd,SW_SHOWNORMAL);
MSG msg;
while (GetMessage(&msg,NULL,0,0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return msg.wParam;
}
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