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Visual programming - Experiment 2
2022-04-23 03:22:00 【Tang Encheng_ hhhc】
One 、 Purpose and requirement of the experiment
1、 Use API Function programming contains all kinds of resources Windows Applications ;
2、 Realization Windows Application response to keyboard and mouse .
Two 、 Experimental content :
1、 Problem description ：
Create a menu , There are three menu items , Respectively “ file ”、“ Calculation ” and “ help ”, among ,“ file ” The menu item contains “ open ”、“ preservation ”、“ drawing ”、“ sign out ” Other menu options ;“ Calculation ” The menu contains “ The sum of the ”、“ variance ”、“ Root mean square ” Other menu options ;“ help ” The menu item contains “ Calculating the sum helps ”、“ Calculate variance help ” and “ Calculating the root mean square helps ” as well as “ About ” Equivalency .
If you click “ drawing ” A menu item , Then draw the following figure .
If you press the left mouse button in the user area , Then dynamically create one including “ Delete calculated sum ”、“ Add calculated average ” and “ Modify the calculated mean square deviation ” Pop up menu of three menu items , This menu controls “ Calculation ” The menu item in the menu is deleted 、 Add and modify .（ Request new pop-up menu not available at the beginning , It becomes available after pressing the right key .） single click “ Modify the calculated mean square deviation ” After menu item ,“ Calculation ” Under the menu “ Calculate the mean square error ” Item to “ Linear fitting ”, single click “ Add calculated average ” After menu item ,“ Calculation ” Added... To the menu “ Calculate average ” A menu item .
Set the cursor to a word in your name 、 Set the icon to another word in your name .
2、 Resources used in the application 、 news , Introduce the functions of the main functions ;
3、 Program realization 4、 Operating results
3、 ... and 、 Program code ( all , Include visual editing diagram of resource file )
Four 、 Operation results and Analysis
The main function code is as follows ：
#include <windows.h>
#include " Experiment two .h"
HINSTANCE hInst;
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
BOOL CALLBACK DlgProc(HWND, UINT, WPARAM, LPARAM);
static int Paint = 0, flag = 0, flags = 0;
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
HACCEL hAccel;
WNDCLASSEX wcex;
HWND hWnd;
MSG msg;
TCHAR lpszMenuName[] = L"Menu";
TCHAR lpszClassName[] = L" Modal dialog ";
TCHAR lpszTitle[] = L"2020316101099_ Huang Jingjing _ Experiment 2 ";
//------------------------------ The following initialization window classes ------------------------------
wcex.cbSize = sizeof(WNDCLASSEX); // The size of the window class
wcex.style = 0; // The default window type is
wcex.lpfnWndProc = WndProc; // The window processing function is WndProc
wcex.cbClsExtra = 0; // Window class has no extension
wcex.cbWndExtra = 0; // The window instance has no extension
wcex.hInstance = hInstance; // Current instance handle
// wcex.hIcon = LoadIcon(NULL, MAKEINTRESOURCE(IDR_MAINFRAME)); // The icon of the window is the default icon
wcex.hIcon = LoadIcon(NULL, MAKEINTRESOURCE(IDI_APPLICATION));
wcex.hCursor = LoadCursorFromFile(L" Customize .cur"); // The window uses the arrow cursor
// wcex.hCursor = LoadCursor(NULL, MAKEINTRESOURCE(IDC_ARROW));
wcex.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH); // The window background is white
wcex.lpszMenuName = lpszMenuName; // There is no menu in the window
wcex.lpszClassName = lpszClassName; // The window class name is “ Window example ”
wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDR_MAINFRAME)); // The small icon of the window is the default icon
// wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_APPLICATION));
//------------------------------ The following window class registration ------------------------------
if (!RegisterClassEx(&wcex)) // Warn if registration fails
{
MessageBox(NULL, L" Window class registration failed ！", L" Window registration ", NULL);
return 1;
}
//------------------------------ Create the following window ------------------------------
hWnd = CreateWindow(
lpszClassName, // Window class name
lpszTitle, // The title name of the window instance
WS_OVERLAPPEDWINDOW, // The style of the window
CW_USEDEFAULT, CW_USEDEFAULT, // The coordinates of the lower left corner of the window are the default values
CW_USEDEFAULT, CW_USEDEFAULT, // The height and width of the window are the default values
NULL, // This window has no parent window
NULL, // This window has no main menu
hInstance, // Create the current handle of this window application
NULL // Do not use this value
);
if (!hWnd) // Warn if window creation fails
{
MessageBox(NULL, L" Failed to create window ！", L" create a window ", NULL);
return 1;
}
ShowWindow(hWnd, nCmdShow); // Display window
UpdateWindow(hWnd);
hInst = hInstance;
hAccel = LoadAccelerators(hInst, lpszMenuName);
// Draw user area
while (GetMessage(&msg, NULL, 0, 0)) // Message loop
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return(int)msg.wParam; // When the program terminates, the information is returned to the system
}
LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
HPEN hP;
HBRUSH hB;
HDC hDC; // Define a handle to the device context
TEXTMETRIC tm;
PAINTSTRUCT PtStr; // Defines a structure variable that points to the drawing information
HMENU Menu;
static HMENU hadmenu;
POINT pt;
switch (message)
{
// Left click the mouse
case WM_LBUTTONDOWN:
if (flag == 0)
{
Menu = GetMenu(hwnd);
hadmenu = CreateMenu();
AppendMenu(hadmenu, MF_GRAYED, IDM_DELETE, L" Delete calculated sum ");
AppendMenu(hadmenu, MF_GRAYED, IDM_ADD, L" Add calculated average ");
AppendMenu(hadmenu, MF_GRAYED, IDM_ALTER, L" Modify the calculated mean square deviation ");
InsertMenu(Menu, 3, MF_POPUP | MF_BYPOSITION, (UINT)hadmenu, L" New menu ");
flag = 1;
// EnableMenuItem(Menu, IDM_DELETE);
DrawMenuBar(hwnd);
break;
}
// Right click and press
case WM_RBUTTONDOWN:
EnableMenuItem(hadmenu, IDM_ADD, MF_ENABLED | MF_BYCOMMAND);
EnableMenuItem(hadmenu, IDM_DELETE, MF_ENABLED | MF_BYCOMMAND);
EnableMenuItem(hadmenu, IDM_ALTER, MF_ENABLED | MF_BYCOMMAND);
case WM_COMMAND:
switch (LOWORD(wParam))
{
/*case WM_SETCURSOR: HCURSOR hCursor; hCursor = LoadCursorFromFile(L" Customize .cur"); SetCursor(hCursor);*/
case IDM_OPEN:
MessageBox(hwnd, L" The file is open ！", L" file open ", MB_OK);
break;
case IDM_SAVE:
MessageBox(hwnd, L" File saved successfully ！", L" file save ", MB_OK);
break;
case IDM_EXIT:
SendMessage(hwnd, WM_DESTROY, 0, 0); break;
case IDM_ABOUT: // Create dialog
DialogBox(hInst, L"About", hwnd, (DLGPROC)DlgProc); break;
case IDM_PAINT:
Paint = 1;
break;
case IDM_DELETE:
Menu = GetMenu(hwnd);
DeleteMenu(Menu, IDM_ZONGHE, MF_BYCOMMAND);
DrawMenuBar(hwnd);
break;
case IDM_ALTER:
Menu = GetMenu(hwnd);
ModifyMenu(Menu, IDM_JUNFANCHA, MF_BYCOMMAND, IDM_XIANXING, L" Linear fitting ");
DrawMenuBar(hwnd);
break;
case IDM_ADD:
Menu = GetMenu(hwnd);
InsertMenu(Menu, IDM_JUNFANCHA, MF_BYCOMMAND | MF_ENABLED, IDM_XIANXING, L" Calculate average ");
// AppendMenu(Menu, MF_ENABLED, IDM_PINJUNZHI, L" Calculate average ");
DrawMenuBar(hwnd);
break;
}
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
// Handle redraw messages
case WM_PAINT:
if (Paint == 1)
{
hDC = BeginPaint(hwnd, &PtStr); // Start painting
SetMapMode(hDC, MM_TEXT);
hB = CreateHatchBrush(HS_CROSS, RGB(255, 0, 0));
SelectObject(hDC, hB);
RoundRect(hDC, 180, 10, 260, 70, 10, 10);
Pie(hDC, 180, 70, 260, 160, 210, 70, 230, 70);
Rectangle(hDC, 180, 160, 260, 220);
hP = CreatePen(PS_DASHDOT, 1, RGB(0, 255, 0));
SelectObject(hDC, hP);
MoveToEx(hDC, 140, 115, NULL);
LineTo(hDC, 300, 115);
MoveToEx(hDC, 220, 0, NULL);
LineTo(hDC, 220, 240);
hB = (HBRUSH)GetStockObject(DC_BRUSH);
SetDCBrushColor(hDC, RGB(225, 0, 0));
SelectObject(hDC, hB);
Rectangle(hDC, 320, 100, 400, 180);
EndPaint(hwnd, &PtStr);
}
return 0;
default: return DefWindowProc(hwnd, message, wParam, lParam);
}
return 0;
}
BOOL CALLBACK DlgProc(HWND hdlg, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_COMMAND:
switch (LOWORD(wParam))
{
case IDOK:
EndDialog(hdlg, 0);
break;
}
break;
case WM_CLOSE:
EndDialog(hdlg, 0);
break;
}
return 0;
}
Resource function code
#include <windows.h>
#include " Experiment two .h"
Menu MENU
{
POPUP " file "
{
MENUITEM " open ", IDM_OPEN
MENUITEM SEPARATOR
MENUITEM " preservation ", IDM_SAVE
MENUITEM SEPARATOR
MENUITEM " drawing ", IDM_PAINT
MENUITEM SEPARATOR
MENUITEM " sign out ", IDM_EXIT
}
POPUP " Calculation "
{
MENUITEM " The sum of the ", IDM_ZONGHE
MENUITEM SEPARATOR
MENUITEM " variance ", IDM_FANCHA
MENUITEM SEPARATOR
MENUITEM " Root mean square ", IDM_JUNFANCHA
}
POPUP " help "
{
MENUITEM " Calculating the sum helps ", IDM_ZONGHEHELP
MENUITEM SEPARATOR
MENUITEM " Calculate variance help ", IDM_FANCHAHELP
MENUITEM SEPARATOR
MENUITEM " Calculating the root mean square helps ", IDM_JUNFANCHAHELP
MENUITEM SEPARATOR
MENUITEM " About ", IDM_ABOUT
}
}
Menu ACCELERATORS
{
"^O", IDM_OPEN
"^S", IDM_SAVE
}
IDR_MAINFRAME ICON "my Icon .ico"
Header file code
#pragma once
#define IDM_OPEN 10
#define IDM_SAVE 12
#define IDM_PAINT 15
#define IDM_EXIT 17
#define IDM_ZONGHE 19
#define IDM_FANCHA 21
#define IDM_JUNFANCHA 23
#define IDM_ZONGHEHELP 25
#define IDM_FANCHAHELP 27
#define IDM_JUNFANCHAHELP 28
#define IDM_ABOUT 20
#define IDR_MAINFRAME 128
#define IDM_DELETE 30
#define IDM_ADD 34
#define IDM_ALTER 36
#define IDM_PINJUNZHI 38
#define IDM_XIANXING 40
The difficulty of this experiment mainly lies in the mouse cursor , Addition and modification of small icon files , In the next section, I will mainly explain this problem . In addition, adding menu resource files is also a difficult problem .
版权声明
本文为[Tang Encheng_ hhhc]所创，转载请带上原文链接，感谢
https://yzsam.com/2022/04/202204220621319587.html
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