孫鑫視頻教程第一課——視窗的建立

  

#include <windows.h>#include <stdio.h>//回呼函數LRESULT CALLBACK WinSunProc(          HWND hwnd,    UINT uMsg,    WPARAM wParam,    LPARAM lParam);//入口函數int WINAPI WinMain(          HINSTANCE hInstance,    HINSTANCE hPrevInstance,    LPSTR lpCmdLine,    int nCmdShow){WNDCLASS wndcls;wndcls.cbClsExtra = 0;wndcls.cbWndExtra = 0;wndcls.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);wndcls.hCursor = LoadCursor(NULL, IDC_HAND);wndcls.hIcon = LoadIcon(NULL, IDI_APPLICATION);wndcls.hInstance = hInstance;wndcls.lpfnWndProc = WinSunProc;wndcls.lpszClassName = TEXT("weixin2003");wndcls.lpszMenuName = NULL;wndcls.style = CS_HREDRAW | CS_VREDRAW;//垂直從化，水平從化！RegisterClass(&wndcls);//註冊一個視窗類別！HWND hwnd;//建立一個視窗hwnd = CreateWindow(TEXT("weixin2003"), TEXT("北京維新科學技術培訓中心"), WS_OVERLAPPEDWINDOW, 50, 50, 800, 600, NULL, NULL, hInstance, NULL);ShowWindow(hwnd, SW_NORMAL);//顯示一個視窗!UpdateWindow(hwnd);//更新一個視窗//訊息迴圈！MSG msg;while (GetMessage(&msg, NULL, 0, 0))//接收一切的訊息！{TranslateMessage(&msg);DispatchMessage(&msg);}return 0;}LRESULT CALLBACK WinSunProc(          HWND hwnd,    UINT uMsg,    WPARAM wParam,    LPARAM lParam){switch(uMsg){case WM_CHAR:char szChar[20];sprintf(szChar, "char is %d", wParam);MessageBox(hwnd, szChar, TEXT("weixin"), 0);break;case WM_PAINT:HDC hDC;PAINTSTRUCT ps;        hDC = BeginPaint(hwnd, &ps);TextOut(hDC, 0, 0, TEXT("維新培訓"), strlen("維新培訓"));EndPaint(hwnd, &ps);break;case WM_CLOSE:if (IDYES == MessageBox(hwnd, TEXT("是否真的結束？"), TEXT("weixin"), MB_YESNO)){DestroyWindow(hwnd);}break;case WM_LBUTTONDOWN:MessageBox(hwnd, TEXT("mouse clicked"), TEXT("weixin"), 0);HDC hdc;hdc = GetDC(hwnd);TextOut(hdc, 0, 50, TEXT("電腦程式設計語言培訓"), strlen("電腦程式設計語言培訓"));ReleaseDC(hwnd, hdc);break;case WM_DESTROY:PostQuitMessage(0);break;default:return DefWindowProc(hwnd, uMsg, wParam, lParam);}return 0;}

     第一課主要是講解window運行原理，根據如何設計一個視窗，建立視窗，註冊視窗，顯示視窗，更新視窗，訊息迴圈這一條線索來編程的，如果你可以安裝這一條線索來寫你的代碼就不會很難的！