更新时间:2016-01-07 14:14:54浏览次数:1+次
int iState = GetKeyState(VK_CAPITAL);
wsprintf(tip,_T("%s"),iState&0x0001?_T("大写"):_T("小写"));
将返回的状态值iState与0x0001执行位与操作,就可以得到这个位的状态,然后判断大小写状态灯的状态。最后可以将字符数组tip输出显示。int iState = GetKeyState(VK_NUMLOCK);
wsprintf(tip,_T("%s"),iState&0x0001?_T("数字键盘有效"):_T("数字键盘无效"));
这两种状态的检测使用GetKeyState检测是最合适的,其他的检测如编辑的插入模式和覆盖模式这类程序自定义的状态,则使用文中开头提到的文章里的方法实现。#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_KEYDOWN:
{
//int iState = GetKeyState(VK_CAPITAL);
//wsprintf(tip,_T("%s"),iState&0x0001?_T("大写"):_T("小写"));
int iState = GetKeyState(VK_NUMLOCK);
wsprintf(tip,_T("%s"),iState&0x0001?_T("数字键盘有效"):_T("数字键盘无效"));
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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