我只是想使用 DrawText() 输出一个整数变量；
这是错误：
错误 7 错误 C2280: 'std::basic_ostringstream,std::allocator>::basic_ostringstream(const std::basic_ostringstream,std::allocator> &)' : 试图引用已删除的函数
这是基本代码：
//Domino.h
#pragma once
#include <Windows.h>
#include <string>
#include <sstream>
class Domino
{
public:
Domino(int xc, int yc);
//~Domino();
void update();
//[ other variables....]
std::ostringstream myVar;
};
//Domino.cpp
#include "Domino.h"
#include <string>
#include <sstream>
Domino::Domino(int xcenter, int ycenter)
{
width = 50;
height = 100;
dotDiameter = 8;
xc = xcenter;
yc = ycenter;
update();
}
void Domino::update()
{
x1 = xc - (width / 2);
x2 = xc + (width / 2);
y1 = yc - (height / 2);
y2 = yc + (height / 2);
std::ostringstream myVar("Value of vDomino[0].xc: ");
myVar << xc;
//[...other stuf..]
}
//main.cpp
#include <windows.h>
#include <vector>
#include "Domino.h"
#include <math.h>
#include <time.h>
#include <string>
#include <sstream>
const wchar_t g_szClassName[] = L"myWindowClass";
void drawDominos(HDC, std::vector<Domino>);
void drawLine(HDC, Domino);
void drawDots(HDC, Domino, POINT);
std::vector<int> vRandValues = {1,2,3,4,5,6};
int nextRandValueIndexToUse = -1;
int penwidth = 2;
//Get a random number from 1 to 6
int randNum;
// Step 4: the Window Procedure
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
HDC hDC;
PAINTSTRUCT ps;
HPEN hPen;
HBRUSH hBrush;
HFONT hFont;
RECT txtRect;
int fontHeight;
int numOfDominos = 3;
int winWidth = 640;
int winHeight = 480;
static int width = 50;
static int height = 100;
static bool isRectangle = true;
static int red = 250;
static int green = 250;
static int blue = 250;
static int penWidth = 5;
static int xc = 150;
static int yc = 150;
Domino D1 = Domino(1 * ((winWidth - (numOfDominos * (width))) / (numOfDominos + 1)) + (width / 2), (winHeight - height) / 2 + height / 2);
Domino D2 = Domino(2 * ((winWidth - (numOfDominos * (width))) / (numOfDominos + 1)) + (3*width / 2), (winHeight - height) / 2 + height / 2);
Domino D3 = Domino(3 * ((winWidth - (numOfDominos * (width))) / (numOfDominos+1)) + (5*width / 2), (winHeight - height) / 2 + height / 2);
std::vector<Domino> vDomino;
vDomino.push_back(D1);
vDomino.push_back(D2);
vDomino.push_back(D3);
red = 1 + rand() % 255;
switch (msg)
{
case WM_PAINT:
for (int i = 0; i < vDomino.size(); i++)
{
vDomino[i].update();
}
hDC = BeginPaint(hwnd, &ps);
//Contour pen
hPen = CreatePen(PS_SOLID, penwidth, RGB(0,0,0));
SelectObject(hDC, hPen);
//Create fill color
hBrush = CreateSolidBrush(RGB(red, vDomino[1].green, vDomino[1].blue));
SelectObject(hDC, hBrush);
//Create fonts
fontHeight = 40;
hFont = CreateFont(fontHeight, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, L"Times New Roman");
SelectObject(hDC, hFont);
if (isRectangle)
{
drawDominos(hDC, vDomino);
}
else
Ellipse(hDC, xc - (width / 2), yc - (height / 2), xc + (width / 2), yc + (height / 2));
// Draw some text
txtRect.top = 0+fontHeight;
txtRect.bottom = 400;
txtRect.left = winWidth/2-200;
txtRect.right = winWidth/2+200;
DrawText(hDC, ((LPTSTR)(vDomino[0].myVar).str().c_str()), -1, &txtRect, DT_CENTER | DT_WORDBREAK); **//THIS IS WHERE I USE myVar**
DeleteObject(hBrush);
DeleteObject(hPen);
DeleteObject(hFont);
EndPaint(hwnd, &ps);
break;
case WM_CHAR:
if (wParam == 'r')
{
isRectangle = true;
InvalidateRect(hwnd, NULL, true);
}
else if (wParam == 'c')
{
red = rand() % 256;
green = rand() % 256;
blue = rand() % 256;
InvalidateRect(hwnd, NULL, true);
}
else if (wParam == 'w')
{
//penWidth = 1 + rand() % 20;
InvalidateRect(hwnd, NULL, true);
}
break;
case WM_KEYDOWN:
if (wParam == VK_SPACE)
{
vRandValues.clear();
for (int i = 0; i < numOfDominos * 2; i++)
{
vRandValues.push_back(1 + rand() % 6);
}
InvalidateRect(hwnd, NULL, true);
}
/*if (wParam == VK_UP)
{
for (int i = 0; i < vDomino.size(); i++)
{
vDomino[i].height *= 1.1;
vDomino[i].width *= 1.1;
}
//InvalidateRect(hwnd, NULL, true);
}
if (wParam == VK_DOWN)
{
for (int i = 0; i < vDomino.size(); i++)
{
vDomino[i].height *= 1.0 / 1.1;
vDomino[i].width *= 1.0 / 1.1;
}
//InvalidateRect(hwnd, NULL, true);
}*/
if (wParam == VK_RIGHT)
{
for (int i = 0; i < vDomino.size(); i++)
{
vDomino[i].xc += 5;
}
InvalidateRect(hwnd, NULL, true);
}
if (wParam == VK_LEFT)
{
for (int i = 0; i < vDomino.size(); i++)
{
vDomino[i].xc -= 5;
}
InvalidateRect(hwnd, NULL, true);
}
if (wParam == VK_UP)
{
for (int i = 0; i < vDomino.size(); i++)
{
vDomino[i].yc -= 5;
}
InvalidateRect(hwnd, NULL, true);
}
if (wParam == VK_DOWN)
{
for (int i = 0; i < vDomino.size(); i++)
{
vDomino[i].yc += 5;
}
InvalidateRect(hwnd, NULL, true);
}
break;
case WM_CLOSE:
DestroyWindow(hwnd);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hwnd, msg, wParam, lParam);
}
return 0;
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPSTR lpCmdLine, int nCmdShow)
{
WNDCLASSEX wc;
HWND hwnd;
MSG Msg;
//Step 1: Registering the Window Class
wc.cbSize = sizeof(WNDCLASSEX);
wc.style = 0;
wc.lpfnWndProc = WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
wc.lpszMenuName = NULL;
wc.lpszClassName = g_szClassName;
wc.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
if (!RegisterClassEx(&wc))
{
MessageBox(NULL, L"Window Registration Failed!", L"Error!",
MB_ICONEXCLAMATION | MB_OK);
return 0;
}
// Step 2: Creating the Window
hwnd = CreateWindowEx(
WS_EX_CLIENTEDGE,
g_szClassName,
L"Nicolas Maltais-Dansereau",
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT, 640, 480,
NULL, NULL, hInstance, NULL);
if (hwnd == NULL)
{
MessageBox(NULL, L"Window Creation Failed!", L"Error!",
MB_ICONEXCLAMATION | MB_OK);
return 0;
}
ShowWindow(hwnd, nCmdShow);
UpdateWindow(hwnd);
// Step 3: The Message Loop
while (GetMessage(&Msg, NULL, 0, 0) > 0)
{
TranslateMessage(&Msg);
DispatchMessage(&Msg);
}
return Msg.wParam;
}
void drawLine(HDC hDC, Domino D)
{
int x1, x2, y2, y1, penwidth = 2;
x1 = D.lineX1;
y1 = D.lineY1;
x2 = D.lineX2;
y2 = D.lineY2;
POINT p[2];
p[0].x = x1;
p[0].y = y1;
p[1].x = x2 - penwidth;
p[1].y = y2;
Polyline(hDC, p, 2);
}
void drawDominos(HDC hDC, std::vector<Domino> vDomino)
{
for (int i = 0; i < vDomino.size(); i++)
{
Rectangle(hDC, vDomino[i].x1, vDomino[i].y1, vDomino[i].x2, vDomino[i].y2);
drawLine(hDC, vDomino[i]);
drawDots(hDC, vDomino[i], vDomino[i].bottomCenter);
drawDots(hDC, vDomino[i], vDomino[i].topCenter);
}
}//ERROR C2280 ON THIS LINE!
void drawDots(HDC hDC, Domino D, POINT p)
{
int x1, y1, x2, y2;
if (nextRandValueIndexToUse < 5)
nextRandValueIndexToUse++;
else
nextRandValueIndexToUse = 0;
switch (vRandValues[nextRandValueIndexToUse])
{
case 1:
//Define points
x1 = p.x - D.dotDiameter / 2;
y1 = p.y - D.dotDiameter / 2;
x2 = x1 + D.dotDiameter;
y2 = y1 + D.dotDiameter;
Ellipse(hDC, x1, y1, x2, y2);
break;
case 2:
//Break center into 2 points and go from there
POINT p1, p2;
//p1 = top right
p1.x = p.x + D.width/4;
p1.y = p.y - D.width/4;
//p2 = bottom left
p2.x = p.x - D.width/4;
p2.y = p.y + D.width/4;
//Define points for p1
x1 = p1.x - D.dotDiameter / 2;
y1 = p1.y - D.dotDiameter / 2;
x2 = x1 + D.dotDiameter;
y2 = y1 + D.dotDiameter;
//Draw p1 dot
Ellipse(hDC, x1, y1, x2, y2);
//Define points for p2
x1 = p2.x - D.dotDiameter / 2;
y1 = p2.y - D.dotDiameter / 2;
x2 = x1 + D.dotDiameter;
y2 = y1 + D.dotDiameter;
//Draw p2 dot
Ellipse(hDC, x1, y1, x2, y2);
break;
case 3:
//Copy-pasted case 1+2;
x1 = p.x - D.dotDiameter / 2;
y1 = p.y - D.dotDiameter / 2;
x2 = x1 + D.dotDiameter;
y2 = y1 + D.dotDiameter;
Ellipse(hDC, x1, y1, x2, y2);
//POINT p1, p2;
//p1 = top right
p1.x = p.x + D.width / 4;
p1.y = p.y - D.width / 4;
//p2 = bottom left
p2.x = p.x - D.width / 4;
p2.y = p.y + D.width / 4;
//Define points for p1
x1 = p1.x - D.dotDiameter / 2;
y1 = p1.y - D.dotDiameter / 2;
x2 = x1 + D.dotDiameter;
y2 = y1 + D.dotDiameter;
//Draw p1 dot
Ellipse(hDC, x1, y1, x2, y2);
//Define points for p2
x1 = p2.x - D.dotDiameter / 2;
y1 = p2.y - D.dotDiameter / 2;
x2 = x1 + D.dotDiameter;
y2 = y1 + D.dotDiameter;
//Draw p2 dot
Ellipse(hDC, x1, y1, x2, y2);
break;
case 4:
//Copy-pasted case 2 + added top-left and bottom right points;
//Break center into 2 points and go from there
POINT p3, p4;
//p1 = top right
p1.x = p.x + D.width / 4;
p1.y = p.y - D.width / 4;
//p2 = bottom left
p2.x = p.x - D.width / 4;
p2.y = p.y + D.width / 4;
//p3 = top left
p3.x = p.x - D.width / 4;
p3.y = p.y - D.width / 4;
//p4 = bottom right
p4.x = p.x + D.width / 4;
p4.y = p.y + D.width / 4;
//Define points for p1
x1 = p1.x - D.dotDiameter / 2;
y1 = p1.y - D.dotDiameter / 2;
x2 = x1 + D.dotDiameter;
y2 = y1 + D.dotDiameter;
//Draw p1 dot
Ellipse(hDC, x1, y1, x2, y2);
//Define points for p2
x1 = p2.x - D.dotDiameter / 2;
y1 = p2.y - D.dotDiameter / 2;
x2 = x1 + D.dotDiameter;
y2 = y1 + D.dotDiameter;
//Draw p2 dot
Ellipse(hDC, x1, y1, x2, y2);
//Define points for p3
x1 = p3.x - D.dotDiameter / 2;
y1 = p3.y - D.dotDiameter / 2;
x2 = x1 + D.dotDiameter;
y2 = y1 + D.dotDiameter;
//Draw p3 dot
Ellipse(hDC, x1, y1, x2, y2);
//Define points for p4
x1 = p4.x - D.dotDiameter / 2;
y1 = p4.y - D.dotDiameter / 2;
x2 = x1 + D.dotDiameter;
y2 = y1 + D.dotDiameter;
//Draw p4 dot
Ellipse(hDC, x1, y1, x2, y2);
break;
case 5:
//Copy paste case 1 and case 4
//Break center into 2 points and go from there
//POINT p3, p4;
//p1 = top right
p1.x = p.x + D.width / 4;
p1.y = p.y - D.width / 4;
//p2 = bottom left
p2.x = p.x - D.width / 4;
p2.y = p.y + D.width / 4;
//p3 = top left
p3.x = p.x - D.width / 4;
p3.y = p.y - D.width / 4;
//p4 = bottom right
p4.x = p.x + D.width / 4;
p4.y = p.y + D.width / 4;
//Define points for p1
x1 = p1.x - D.dotDiameter / 2;
y1 = p1.y - D.dotDiameter / 2;
x2 = x1 + D.dotDiameter;
y2 = y1 + D.dotDiameter;
//Draw p1 dot
Ellipse(hDC, x1, y1, x2, y2);
//Define points for p2
x1 = p2.x - D.dotDiameter / 2;
y1 = p2.y - D.dotDiameter / 2;
x2 = x1 + D.dotDiameter;
y2 = y1 + D.dotDiameter;
//Draw p2 dot
Ellipse(hDC, x1, y1, x2, y2);
//Define points for p3
x1 = p3.x - D.dotDiameter / 2;
y1 = p3.y - D.dotDiameter / 2;
x2 = x1 + D.dotDiameter;
y2 = y1 + D.dotDiameter;
//Draw p3 dot
Ellipse(hDC, x1, y1, x2, y2);
//Define points for p4
x1 = p4.x - D.dotDiameter / 2;
y1 = p4.y - D.dotDiameter / 2;
x2 = x1 + D.dotDiameter;
y2 = y1 + D.dotDiameter;
//Draw p4 dot
Ellipse(hDC, x1, y1, x2, y2);
//Define points
x1 = p.x - D.dotDiameter / 2;
y1 = p.y - D.dotDiameter / 2;
x2 = x1 + D.dotDiameter;
y2 = y1 + D.dotDiameter;
Ellipse(hDC, x1, y1, x2, y2);
break;
case 6:
//copy case 4 and add 2 new points
//Break center into 2 points and go from there
POINT p5, p6;
//p1 = top right
p1.x = p.x + D.width / 4;
p1.y = p.y - D.width / 4;
//p2 = bottom left
p2.x = p.x - D.width / 4;
p2.y = p.y + D.width / 4;
//p3 = top left
p3.x = p.x - D.width / 4;
p3.y = p.y - D.width / 4;
//p4 = bottom right
p4.x = p.x + D.width / 4;
p4.y = p.y + D.width / 4;
//p5 = center left
p5.x = p.x - D.width / 4;
p5.y = p.y;
//p4 = center right
p6.x = p.x + D.width / 4;
p6.y = p.y;
//Define points for p1
x1 = p1.x - D.dotDiameter / 2;
y1 = p1.y - D.dotDiameter / 2;
x2 = x1 + D.dotDiameter;
y2 = y1 + D.dotDiameter;
//Draw p1 dot
Ellipse(hDC, x1, y1, x2, y2);
//Define points for p2
x1 = p2.x - D.dotDiameter / 2;
y1 = p2.y - D.dotDiameter / 2;
x2 = x1 + D.dotDiameter;
y2 = y1 + D.dotDiameter;
//Draw p2 dot
Ellipse(hDC, x1, y1, x2, y2);
//Define points for p3
x1 = p3.x - D.dotDiameter / 2;
y1 = p3.y - D.dotDiameter / 2;
x2 = x1 + D.dotDiameter;
y2 = y1 + D.dotDiameter;
//Draw p3 dot
Ellipse(hDC, x1, y1, x2, y2);
//Define points for p4
x1 = p4.x - D.dotDiameter / 2;
y1 = p4.y - D.dotDiameter / 2;
x2 = x1 + D.dotDiameter;
y2 = y1 + D.dotDiameter;
//Draw p4 dot
Ellipse(hDC, x1, y1, x2, y2);
//Define points for p5
x1 = p5.x - D.dotDiameter / 2;
y1 = p5.y - D.dotDiameter / 2;
x2 = x1 + D.dotDiameter;
y2 = y1 + D.dotDiameter;
//Draw p5 dot
Ellipse(hDC, x1, y1, x2, y2);
//Define points for p6
x1 = p6.x - D.dotDiameter / 2;
y1 = p6.y - D.dotDiameter / 2;
x2 = x1 + D.dotDiameter;
y2 = y1 + D.dotDiameter;
//Draw p6 dot
Ellipse(hDC, x1, y1, x2, y2);
break;
default:
break;
}
}