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发表于 2016-7-19 15:11:02
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- /* -------------------------------------------------------------------
- MyWindows.c -- 基本窗口模型
- 《Windows 程序设计(SDK)》视频教程
- --------------------------------------------------------------------*/
- #include <windows.h>
- #include <strsafe.h>
- #include "SysMet.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("鱼C工作室"),
- WS_OVERLAPPEDWINDOW,
- CW_USEDEFAULT,
- CW_USEDEFAULT,
- CW_USEDEFAULT,
- CW_USEDEFAULT,
- NULL,
- NULL,
- hInstance,
- NULL);
-
- ShowWindow(hwnd, iCmdShow);
- while (GetMessage(&msg, NULL, 0, 0))
- {
- TranslateMessage(&msg);
- DispatchMessage(&msg);
- }
- return msg.wParam;
- }
- LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
- {
- HDC hdc;
- PAINTSTRUCT ps;
- RECT rect;
- TCHAR szBuffer[128] = TEXT("12345");
- TEXTMETRIC tm;
- SCROLLINFO si;
- int pos = 0;
- static int cxChar, cxCaps, cyChar, cxClient, cyClient, xClientMax;
- size_t iTarget;
- int i;
- int xPos=0,yPos = 0;
- int displayPos,displayxPos = 0;
- int FirstLine,LastLine;
- switch (message)
- {
- case WM_CREATE:
- hdc = GetDC(hwnd);
- GetTextMetrics(hdc, &tm);
- cxChar = tm.tmAveCharWidth;
- cxCaps = (tm.tmPitchAndFamily & 1 ? 3 : 2) * cxChar / 2;
- cyChar = tm.tmHeight + tm.tmExternalLeading;
- ReleaseDC(hwnd, hdc);
- return 0;
- case WM_PAINT:
- hdc = BeginPaint(hwnd, &ps);
- //获取垂直滚动条的位置
- si.cbSize = sizeof(si);
- si.fMask = SIF_POS;
- GetScrollInfo(hwnd,SB_VERT,&si);
- yPos = si.nPos;
- //获取纵向滚动条的位置
- si.cbSize = sizeof(si);
- si.fMask = SIF_POS;
- GetScrollInfo(hwnd,SB_HORZ,&si);
- xPos = si.nPos;
- //计数需要重绘的行
- FirstLine = max(0, yPos + ps.rcPaint.top / cyChar);
- LastLine = min(NUMLINES - 1, yPos + ps.rcPaint.bottom / cyChar);
- for (i = FirstLine; i <= LastLine; i++)
- {
- SetTextAlign(hdc, TA_LEFT | TA_TOP);
- displayPos = (i-yPos) * cyChar; //计数重绘行的纵向位置
-
- displayxPos = -xPos* cxChar;
- StringCchLength(sysmetrics[i].szLabel, 1024, &iTarget);
- TextOut(hdc, displayxPos,displayPos, sysmetrics[i].szLabel, iTarget);
- displayxPos = (22 * cxCaps) - xPos* cxChar;
- StringCchLength(sysmetrics[i].szDesc, 1024, &iTarget);
- TextOut(hdc, displayxPos, displayPos, sysmetrics[i].szDesc, iTarget);
- SetTextAlign(hdc, TA_RIGHT | TA_TOP);
- displayxPos = (25 * cxCaps + 40 * cxChar) - xPos* cxChar;
- StringCchPrintf(szBuffer, 128, TEXT("%5d------%d"), GetSystemMetrics(sysmetrics[i].iIndex),i);
- StringCchLength(szBuffer, 128, &iTarget);
- TextOut(hdc, displayxPos, displayPos, szBuffer, iTarget);
- }
- //绘制完毕
- EndPaint(hwnd, &ps);
- xClientMax = 75*cxChar;//这里最好是测算出来,而不是写死,后面再说吧。
- return 0;
- case WM_SIZE:
- hdc = GetDC(hwnd);
- cxClient = LOWORD(lParam);
- cyClient = HIWORD(lParam);
- StringCchPrintf(szBuffer,128,TEXT("%d * %d"),cxClient,cyClient);
- SetTextAlign(hdc, TA_TOP | TA_RIGHT);
- TextOut(hdc, cxClient - 40, 30,szBuffer , lstrlen(szBuffer));
- ReleaseDC(hwnd,hdc);
-
- //设置纵向滚动条
- si.cbSize = sizeof(si);
- si.fMask = SIF_RANGE | SIF_PAGE | SIF_POS | SIF_DISABLENOSCROLL;
- si.nMin = 0;
- si.nMax = NUMLINES-1;
- si.nPage = cyClient/cyChar;
- si.nPos = 0;
- SetScrollInfo(hwnd,SB_VERT,&si,FALSE);
- //设置横向滚动条
- si.cbSize = sizeof(si);
- si.fMask = SIF_RANGE | SIF_PAGE | SIF_POS | SIF_DISABLENOSCROLL;
- si.nMin = 0;
- si.nMax = xClientMax/cxChar;
- si.nPage = cxClient/cxChar;
- si.nPos = 0;
- SetScrollInfo(hwnd,SB_HORZ,&si,FALSE);
- return 0;
-
- case WM_LBUTTONDOWN:
- return 0;
-
- case WM_HSCROLL:
- //获取横向滚动条
- si.cbSize = sizeof(si);
- si.fMask = SIF_ALL;
- GetScrollInfo(hwnd,SB_HORZ,&si);
- xPos = si.nPos;
- switch (LOWORD(wParam))
- {
- case SB_LINELEFT:
- xPos = si.nPos;
- break;
- case SB_LINERIGHT:
- si.nPos++;
- break;
- case SB_PAGELEFT:
- si.nPos -= si.nPage;
- if(si.nPos < 0) si.nPos = 0;
- break;
- case SB_PAGERIGHT:
- si.nPos += si.nPage;
- break;
- case SB_THUMBTRACK:
- si.nPos = si.nTrackPos;
- break;
- }
-
- //设置纵向滚动条
- si.cbSize = sizeof(si);
- si.fMask = SIF_POS;
- SetScrollInfo(hwnd,SB_HORZ,&si,TRUE);
- GetScrollInfo(hwnd,SB_HORZ,&si);
- if(xPos - si.nPos != 0)
- {
- ScrollWindow(hwnd,cxChar*(xPos - si.nPos),0,NULL,NULL);
- UpdateWindow(hwnd);
- }
-
- return 0;
- case WM_VSCROLL:
- //获取纵向滚动条
- si.cbSize = sizeof(si);
- si.fMask = SIF_ALL;
- GetScrollInfo(hwnd,SB_VERT,&si);
- yPos = si.nPos;
- switch (LOWORD(wParam))
- {
- case SB_LINEUP:
- yPos = si.nPos;
- si.nPos--;
- break;
- case SB_LINEDOWN:
- si.nPos++;
- break;
- case SB_PAGEUP:
- si.nPos -= si.nPage;
- break;
- case SB_PAGEDOWN:
- si.nPos += si.nPage;
- break;
- case SB_THUMBTRACK:
- si.nPos = si.nTrackPos;
- break;
- }
-
- //设置纵向滚动条
- si.cbSize = sizeof(si);
- si.fMask = SIF_POS;
- SetScrollInfo(hwnd,SB_VERT,&si,TRUE);
- //InvalidateRect(hwnd,NULL,TRUE);
- GetScrollInfo(hwnd,SB_VERT,&si);
- if(yPos - si.nPos != 0)
- {
- rect.left = 0;
- rect.top = 0;
- rect.right = (22 * cxCaps);
- rect.bottom = cyClient;
- ScrollWindow(hwnd, 0, cyChar*(yPos - si.nPos),&rect,NULL);
- //ScrollWindow(hwnd, 0, cyChar*(yPos - si.nPos),NULL,NULL);
- UpdateWindow(hwnd);
- }
- return 0;
- case WM_DESTROY:
- PostQuitMessage(0);
- return 0;
- }
- return DefWindowProc(hwnd, message, wParam, lParam);
- }
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