更新时间:2016-01-04 17:18:28浏览次数:1+次
效果图如下:
#include "windows.h"
#include <tchar.h>
TCHAR cjjjs[100]=_T("【C++技术网http:www.cjjjs.com】请直接输入文字");
TCHAR txt[1024]=_T("");
LRESULT CALLBACK WinProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)
{
HDC hdc;
PAINTSTRUCT ps;
static bool bIsCap=false;
switch (message)
{
case WM_PAINT:
hdc = BeginPaint(hwnd,&ps);
SelectObject(hdc,GetStockObject(SYSTEM_FIXED_FONT));
TextOut(hdc,0,100,cjjjs,lstrlen(cjjjs));
TextOut(hdc,0,0,txt,lstrlen(txt));
if (bIsCap)
{
TextOut(hdc,0,150,_T("当前状态:大写"),lstrlen(_T("当前状态:大写")));
}
else
{
TextOut(hdc,0,150,_T("当前状态:小写"),lstrlen(_T("当前状态:小写")));
}
EndPaint(hwnd,&ps);
return 0;
case WM_CHAR:
{
TCHAR ch=(TCHAR)wParam;
if (ch==8)
{
int len=lstrlen(txt)-1;
txt[len]=_T('\0');
}
else
{
txt[lstrlen(txt)]=ch;
}
}
InvalidateRect(hwnd,NULL,TRUE);//刷新显示结果
return 0;
case WM_KEYDOWN:
{
if (VK_CAPITAL==wParam)
{
bIsCap=!bIsCap;
}
}
InvalidateRect(hwnd,NULL,TRUE);//刷新显示结果
return 0;
case WM_RBUTTONDOWN:
{
txt[0]=_T('\0');//只是填充开头一个元素为0,在输入一个之后,就会恢复之前的长度
memset(txt,0,sizeof(txt));//这样才能将所有内存情况,真正清空字符串
InvalidateRect(hwnd,NULL,TRUE);
}
return 0;
case WM_DESTROY:
PostQuitMessage(0);
return 0;
default:
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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