|
马上注册,结交更多好友,享用更多功能^_^
您需要 登录 才可以下载或查看,没有账号?立即注册
x
- /* -------------------------------------------------------------------
- MyWindows.c -- 基本窗口模型
- 《Windows 程序设计(SDK)》视频教程
- --------------------------------------------------------------------*/
- #include <windows.h>
- LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
- int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow)
- {
- static TCHAR szAppName[] = TEXT("WhatSize");
- 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("WhatSize is the Window?"),
- WS_OVERLAPPEDWINDOW,
- 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;
- }
- void Show(HWND hwnd, HDC hdc, int xText, int yText, int iMapMode, TCHAR * szMapMode)
- {
- TCHAR szBuffer[60];
- RECT rect;
- SaveDC(hdc);
- SetMapMode(hdc, iMapMode);
- GetClientRect(hwnd, &rect);
- DPtoLP(hdc, (PPOINT)&rect, 2);
- RestoreDC(hdc, -1);
- TextOut(hdc, xText, yText, szBuffer,
- wsprintf(szBuffer, TEXT("%-20s %7d %7d %7d %7d"), szMapMode,
- rect.left, rect.right, rect.top, rect.bottom));
- }
- LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
- {
- HDC hdc;
- PAINTSTRUCT ps;
- static TCHAR szHeading[] = TEXT("Mapping Mode LEft Right Top Bottom");
- static TCHAR szUndLine[] = TEXT("_______ ____ ____ _____ ___ _______");
-
- static int cxChar ,cyChar;
- TEXTMETRIC tm;
- switch (message)
- {
- case WM_CREATE:
- hdc = GetDC(hwnd);
- SelectObject(hdc, GetStockObject(SYSTEM_FIXED_FONT));
- GetTextMetrics(hdc, &tm);
- cxChar = tm.tmAveCharWidth;
- cyChar = tm.tmHeight + tm.tmExternalLeading;
- ReleaseDC(hwnd, hdc);
- return 0;
-
- case WM_PAINT:
- hdc = BeginPaint(hwnd, &ps);
-
- SelectObject(hdc, GetStockObject(SYSTEM_FIXED_FONT));
- SetMapMode(hdc, MM_ANISOTROPIC);
- SetWindowExtEx(hdc, 1, 1, NULL);
- SetViewportExtEx(hdc, cxChar, cyChar, NULL);
- TextOut(hdc, 1, 1, szHeading, lstrlen(szHeading));
- TextOut(hdc, 1, 2, szUndLine, lstrlen(szUndLine));
- Show(hwnd, hdc, 1, 3, MM_TEXT, TEXT("TEXT(pixels)"));
- Show(hwnd, hdc, 1, 4, MM_LOMETRIC, TEXT("LOMETRIC(.1mm)"));
- Show(hwnd, hdc, 1, 5, MM_HIMETRIC, TEXT("HIMETRIC(.01mm)"));
- Show(hwnd, hdc, 1, 6, MM_LOENGLISH, TEXT("LOENGLISH(.01in)"));
- Show(hwnd, hdc, 1, 7, MM_HIENGLISH, TEXT("HIENGLISH(.001.in)"));
- Show(hwnd, hdc, 1, 8, MM_TWIPS, TEXT("TWIPS(1/1440 in)"));
-
- EndPaint(hwnd, &ps);
-
复制代码
上面 是源代码
下面这段是什么意思是 为什么要写 这段代码
还个问题就是 好多api函数在百度上都搜不到 搜到了也看不懂意思 谁有好方法介绍下 谢谢
void Show(HWND hwnd, HDC hdc, int xText, int yText, int iMapMode, TCHAR * szMapMode)
{
TCHAR szBuffer[60];
RECT rect;
SaveDC(hdc);
SetMapMode(hdc, iMapMode);
GetClientRect(hwnd, &rect);
DPtoLP(hdc, (PPOINT)&rect, 2);
RestoreDC(hdc, -1);
TextOut(hdc, xText, yText, szBuffer,
wsprintf(szBuffer, TEXT("%-20s %7d %7d %7d %7d"), szMapMode,
rect.left, rect.right, rect.top, rect.bottom));
}
|
|