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- #include <windows.h>
- #include<strsafe.h>
- LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
- int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow)
- {
- static TCHAR szAppName[] = TEXT("MyWindows");
- HWND hwnd;
- MSG msg;
- WNDCLASS wndclass;
- wndclass.style = CS_HREDRAW | CS_VREDRAW;
- wndclass.lpfnWndProc = WndProc;
- wndclass.cbClsExtra = 0;
- wndclass.cbWndExtra = 0;
- wndclass.hInstance = hInstance;
- wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
- wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
- wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
- wndclass.lpszMenuName = NULL;
- wndclass.lpszClassName = szAppName;
- if (!RegisterClass(&wndclass))
- {
- MessageBox(NULL, TEXT("这个程序需要在 Windows NT 才能执行!"), szAppName, MB_ICONERROR);
- return 0;
- }
- hwnd = CreateWindow(szAppName,
- TEXT("hello"),
- WS_OVERLAPPEDWINDOW | WS_VSCROLL | WS_HSCROLL,
- CW_USEDEFAULT,
- CW_USEDEFAULT,
- CW_USEDEFAULT,
- CW_USEDEFAULT,
- NULL,
- NULL,
- hInstance,
- NULL);
- ShowWindow(hwnd, iCmdShow);
- UpdateWindow(hwnd);
- while (GetMessage(&msg, NULL, 0, 0))
- {
- TranslateMessage(&msg);
- DispatchMessage(&msg);
- }
- return msg.wParam;
- }
- LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam)
- {
- static int cxClientMax, cyClientMax, cxClient, cyClient, cxChar, cyChar;
- static int cLinesMax, cLines;//客户区最大化可以容纳的行数,当前申请的内存块里面有的消息行数
- static PMSG pmsg;
- static RECT RectScroll;
- static TCHAR szTop[] = TEXT("Message Key Char Repeat Scan Ext Alt Prev Tran");
- static TCHAR szUnd[] = TEXT("_______ ___ ___ ______ ____ ___ ___ ____ ____");
- static TCHAR* szFormat[2] = { TEXT("%-13s %3d %-15s%c%6u %4d %3s %4s %4s"),
- TEXT("%-13s 0x%04X%1s%c %6u %4d %3s %3s %4s %4s")};
- static TCHAR* szYes = TEXT("Yes");
- static TCHAR* szNo = TEXT("No");
- static TCHAR* szDown = TEXT("Down");
- static TCHAR* szUp = TEXT("Up");
- static TCHAR * szMessage[] = { TEXT("WM_KEYDONE"),TEXT("WM_KEYUP"),TEXT("WM_CHAR"),TEXT("WM_DEADCHAR"),
- TEXT("WM_SYSKEYDONE"),TEXT("WM_SYSKEYUP"),TEXT("WM_SYSCHAR"),TEXT("WM_SYSDEADCHAR") };
- HDC hdc;
- int iType;
- size_t iTarget;
- PAINTSTRUCT ps;
- TCHAR szBuffer[128], szKeyName[32];
- TEXTMETRIC tm;
- int LinesTemp;//当前需要显示的行数
- switch (message)
- {
- case WM_CREATE:
- //不管,继续执行
- case WM_DISPLAYCHANGE:
- //客户区最大化或者最小化会产生这个消息
- cxClientMax = GetSystemMetrics(SM_CXMAXIMIZED);
- cyClientMax = GetSystemMetrics(SM_CYMAXIMIZED);
- hdc = GetDC(hwnd);
- //设置等宽字体
- SelectObject(hdc, GetStockObject(SYSTEM_FIXED_FONT));
- GetTextMetrics(hdc, &tm);
- cxChar = tm.tmAveCharWidth;
- cyChar = tm.tmHeight;
- ReleaseDC(hwnd, hdc);
- if (pmsg)
- {
- free(pmsg);
- }
-
- //计算客户区最大高度可以容纳多少行
- cLinesMax = cyClientMax / cyChar;
- //申请一块内存,大小为客户区最大高度可以容纳的行数*一行多大(MSG类型占用多大空间)
- pmsg = (PMSG)malloc( cLinesMax * sizeof(MSG));
- cLines = 0;
- //如果内存申请失败
- if (pmsg == NULL)
- {
- MessageBox(hwnd, TEXT("内存申请失败"), TEXT("Error"), MB_OK);
- PostQuitMessage(0);
- }
- case WM_SIZE:
- if (message == WM_SIZE)
- {
- cxClient = LOWORD(lparam);
- cyClient = HIWORD(lparam);
- }
-
- //计算滚动的矩形
- RectScroll.left = 0;
- RectScroll.right = cxClient;
- RectScroll.top = cyChar;
- RectScroll.bottom = cyClient;
- InvalidateRect(hwnd, NULL, TRUE);
- return 0;
- case WM_KEYDOWN:
- case WM_KEYUP:
- case WM_CHAR:
- case WM_DEADCHAR:
- case WM_SYSKEYDOWN:
- case WM_SYSKEYUP:
- case WM_SYSCHAR:
- case WM_SYSDEADCHAR:
- //这几个消息都这么干
- for (int i = cLinesMax - 1; i > 0; i--)
- {
- pmsg[i] = pmsg[i - 1];
- }
- pmsg[0].hwnd = hwnd;
- pmsg[0].message = message;
- pmsg[0].lParam = lparam;
- pmsg[0].wParam = wparam;
-
- //cLines这个变量的作用很难解释...
- cLines = min(cLines + 1, cLinesMax);
- ScrollWindow(hwnd, 0, -cyChar, & ScrollWindow, &ScrollWindow);
- return 0;
- case WM_PAINT:
- hdc = BeginPaint(hwnd, &ps);
- SelectObject(hdc, GetStockObject(SYSTEM_FIXED_FONT));
- //设置背景为透明色
- SetBkMode(hdc, TRANSPARENT);
- StringCchLength(szTop, 1024, &iTarget);
- TextOut(hdc, 0, 0, szTop, iTarget);
- StringCchLength(szUnd, 1024, &iTarget);
- TextOut(hdc, 0, 0, szUnd, iTarget);
- //当前需要显示的行数 = 当前内存块里面有的消息行数 和 当前客户区最多可以容纳的行数 中的小的那个,减一是因为最上面那一行显示的有文字
- LinesTemp = min(cLines, cyClient / cyChar - 1);
- for (size_t i = 0; i < min(cLines, cyClient / cyChar - 1); i++)
- {
- iType = (pmsg[i].message == WM_CHAR || pmsg[i].message == WM_SYSCHAR || pmsg[i].message == WM_DEADCHAR || pmsg[i].message == WM_SYSDEADCHAR);
- GetKeyNameText(pmsg[i].lParam, szKeyName, 32);
- StringCchPrintf(szBuffer, sizeof(szBuffer), szFormat[iType],
- szMessage[pmsg[i].message - WM_KEYFIRST],
- pmsg[i].wParam,
- (PTSTR)(iType ? TEXT("") : szKeyName),
- (TCHAR)(iType ? pmsg[i].wParam : ' '),
- LOWORD(pmsg[i].lParam),
- HIWORD(pmsg[i].lParam) & 0xff,
- 0x01000000 & pmsg[i].lParam ? szYes : szNo,
- 0x20000000 & pmsg[i].lParam ? szYes : szNo,
- 0x40000000 & pmsg[i].lParam ? szDown : szUp,
- 0x80000000 & pmsg[i].lParam ? szUp : szDown);
- StringCchLength(szBuffer, sizeof(szBuffer), &iTarget);
- TextOut(hdc, 0, (cyClient / cyChar - 1 - i)*cyChar, szBuffer, iTarget);
- TextOut(hdc, 100, 100, TEXT("kkkk"), 4);
- TextOut(hdc, 100, 100, TEXT("kkkk"), 4);
- }
- EndPaint(hwnd, &ps);
- return 0;
- case WM_DESTROY:
- PostQuitMessage(0);
- return 0;
- }
- return DefWindowProc(hwnd, message, wparam, lparam);
- }
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