7Windows_paint GDI绘图

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  1. // 7Windows_paint.cpp : 定义应用程序的入口点。
  2. //
  4. #include "stdafx.h"
  5. #include "7Windows_paint.h"
  6. #include "resource.h"
  8. #include <iostream>
  10. HINSTANCE g_hInst = NULL;
  11. HANDLE g_hStdout = NULL; //控制台
  12. int g_DrawType = 0;
  13. COLORREF g_nPenColor = RGB(0,0,0); //画笔颜色
  14. int g_nPenStyle = PS_SOLID; //画笔样式
  15. int g_nPenWdith = 1; //画笔宽度
  16. COLORREF g_nBrushColor = RGB(0, 0, 0); //画刷
  17. int g_nBrushStyle = 0xFFFFFFFF; //画刷样式
  19. CHAR szText[256] = { 0 }; //备用字符串
  20. #define PrintLog(x) WriteConsole(g_hStdout, x, strlen(x), NULL, NULL)
  22. void DrawPixel(HDC hDC)
  23. {
  24. 	COLORREF nColor = RGB(255,0,0);
  25. 	SetPixel(hDC, 100, 100, nColor);
  26. }
  27. void GetPixelColor(HDC hDC)
  28. {
  29. 	COLORREF nColor = GetPixel(hDC, 100, 100);
  31. 	int nRed = GetRValue(nColor);
  32. 	int nGreen = GetGValue(nColor);
  33. 	int nBlue = GetBValue(nColor);
  35. 	sprintf_s(szText, 256, "nRed=%d,nGreen=%d,nBlue=%d", nRed, nGreen, nBlue);
  36. 	//PrintLog(szText);
  37. 	MessageBox(NULL, szText, "color", MB_OK);
  38. 	
  39. }
  41. //DrawLine
  42. void DrawLine(HDC hDC)
  43. {
  44. 	MoveToEx(hDC, 0, 0, NULL); //当前点
  45. 	LineTo(hDC, 500, 500);
  47. 	MoveToEx(hDC, 500, 0, NULL);
  48. 	LineTo(hDC, 0, 500);
  50. }
  52. //DrawArc弧
  53. void DrawArc(HDC hDC)
  54. {
  55. 	SetArcDirection(hDC, AD_CLOCKWISE);//AD_COUNTERCLOCKWISE //顺时针
  56. 	Arc(hDC, 400, 200, 500, 300, 500, 200, 400, 200); //顺时针和逆时针画出来的东西不同
  58. 	SetArcDirection(hDC, AD_COUNTERCLOCKWISE);//AD_CLOCKWISE //逆时针
  59. 	Arc(hDC, 500, 200, 600, 300, 600, 200, 500, 400); //顺时针和逆时针画出来的东西不同
  62. 	MoveToEx(hDC, 200, 200, NULL);
  63. 	AngleArc(hDC, 200, 200, 100, 90, 270);
  64. 	LineTo(hDC, 200, 200);
  65. }
  67. //DrawPolyLine
  68. //折线
  69. void DrawPolyLine(HDC hDC)
  70. {
  71. 	POINT ptPolyLine[7] = { 0 }; //三角形需要4个点
  72. 	ptPolyLine[0].x = 100;
  73. 	ptPolyLine[0].y = 100;
  74. 	ptPolyLine[1].x = 200;
  75. 	ptPolyLine[1].y = 100;
  76. 	ptPolyLine[2].x = 200;
  77. 	ptPolyLine[2].y = 200;
  78. 	ptPolyLine[3].x = 300;
  79. 	ptPolyLine[3].y = 200;
  80. 	ptPolyLine[4].x = 300;
  81. 	ptPolyLine[4].y = 300;
  82. 	ptPolyLine[5].x = 400;
  83. 	ptPolyLine[5].y = 300;
  84. 	ptPolyLine[6].x = 400;
  85. 	ptPolyLine[6].y = 400;
  87. 	//两点绘制一直线
  88. 	Polyline(hDC, ptPolyLine, 7); //绘制折线
  89. 	//PolylineTo(hDC, ptPolyLine, 4);
  91. 	/*
  92. 		分成两组，这两组之间没有任何关联
  93. 	*/
  94. 	DWORD nGroup[2] = { 3, 4 };
  95. 	//PolyPolyline(hDC, ptPolyLine, nGroup, 2);
  96. }
  98. //DrawBizer曲线
  99. void DrawBizer(HDC hDC)
  100. {
  101. 	POINT ptBizer[7] = { 0 };
  102. 	ptBizer[0].x = 100; //端点
  103. 	ptBizer[0].y = 100;
  104. 	ptBizer[1].x = 150; //控制点
  105. 	ptBizer[1].y = 50;
  106. 	ptBizer[2].x = 300; //控制点
  107. 	ptBizer[2].y = 150;
  108. 	ptBizer[3].x = 300; //端点
  109. 	ptBizer[3].y = 100;
  110. 	ptBizer[4].x = 300; //控制点
  111. 	ptBizer[4].y = 400;
  112. 	ptBizer[5].x = 400; //控制点
  113. 	ptBizer[5].y = 200;
  114. 	ptBizer[6].x = 500; //端点
  115. 	ptBizer[6].y = 300;
  117. 	PolyBezier(hDC, ptBizer, 7);
  119. 	//为了看的更清楚，把切线也给划出来
  120. 	MoveToEx(hDC, ptBizer[0].x, ptBizer[0].y,NULL);
  121. 	LineTo(hDC, ptBizer[1].x, ptBizer[1].y);
  122. 	MoveToEx(hDC, ptBizer[2].x, ptBizer[2].y, NULL);
  123. 	LineTo(hDC, ptBizer[3].x, ptBizer[3].y);
  124. }
  126. //DrawPolyDraw多样式线
  127. void DrawPolyDraw(HDC hDC)
  128. {
  129. 	POINT ptDraw[4] = { 0 };
  130. 	ptDraw[0].x = 100;
  131. 	ptDraw[0].y = 100;
  132. 	ptDraw[1].x = 200;
  133. 	ptDraw[1].y = 100;
  134. 	ptDraw[2].x = 200;
  135. 	ptDraw[2].y = 200;
  136. 	ptDraw[3].x = 300;
  137. 	ptDraw[3].y = 200;
  139. 	BYTE ptType[4] = { 0 }; //PolyDraw第三个参数
  140. 	ptType[0] = PT_MOVETO;
  141. 	ptType[1] = PT_LINETO;
  142. 	ptType[2] = PT_MOVETO;
  143. 	ptType[3] = PT_LINETO;
  145. 	PolyDraw(hDC, ptDraw, ptType, 4);
  146. }
  148. //Rect 矩形
  149. void DrawRect(HDC hDC)
  150. {
  151. 	//矩形
  152. 	Rectangle(hDC, 100, 100, 200, 200);
  153. 	//带圆角矩形
  154. 	RoundRect(hDC, 300, 100, 400, 200, 10, 10);
  155. }
  157. //DrawEllipse圆和椭圆
  158. void DrawEllipse(HDC hDC)
  159. {
  160. 	//圆
  161. 	Ellipse(hDC, 100, 100, 200, 200);
  162. 	//椭圆
  163. 	Ellipse(hDC, 300, 100, 500, 200);
  164. }
  166. //DrawPie饼图
  167. void DrawPie(HDC hDC)
  168. {
  169. 	Pie(hDC, 100, 100, 500, 400, 500, 100, 100, 100);
  170. }


  172. //Chord弦
  173. void DrawChord(HDC hDC)
  174. {
  175. 	Chord(hDC, 100, 100, 500, 400, 500, 100, 100, 100);
  176. }
  178. //DrawPolygon多边形
  179. void DrawPolygon(HDC hDC)
  180. {
  181. 	POINT ptPolygon[7] = { 0 };
  182. 	ptPolygon[0].x = 100;
  183. 	ptPolygon[0].y = 100;
  184. 	ptPolygon[1].x = 200;
  185. 	ptPolygon[1].y = 100;
  186. 	ptPolygon[2].x = 200;
  187. 	ptPolygon[2].y = 200;
  188. 	ptPolygon[3].x = 300;
  189. 	ptPolygon[3].y = 200;
  190. 	ptPolygon[4].x = 300;
  191. 	ptPolygon[4].y = 300;
  192. 	ptPolygon[5].x = 400;
  193. 	ptPolygon[5].y = 300;
  194. 	ptPolygon[6].x = 400;
  195. 	ptPolygon[6].y = 400;
  197. 	Polygon(hDC, ptPolygon, 7);
  199. }
  200. void OnPaint(HWND hWnd, UINT nMsg, WPARAM wParam, LPARAM lParam)
  201. {
  202. 	PAINTSTRUCT ps = { 0 };
  203. 	HDC hDC = BeginPaint(hWnd,&ps);
  206. 	//画笔使用
  207. 	//创建画笔
  208. 	HPEN hPen = CreatePen(g_nPenStyle, g_nPenWdith, g_nPenColor);
  209. 	//设置画笔到当前DC
  210. 	HPEN hOldPen = (HPEN)SelectObject(hDC, hPen);
  211. 	
  212. 	//画刷使用*/
  213. 	//创建画刷
  214. 	/*以下一句为默认画刷*/
  215. 	//HBRUSH hBrush = CreateSolidBrush(g_nBrushColor);
  217. 	//创建画刷样式时改写
  218. 	HBRUSH hBrush = NULL;
  219. 	if (g_nBrushStyle == 0xFFFFFFFF)
  220. 	{
  221. 		hBrush = CreateSolidBrush(g_nBrushColor);
  222. 	}
  223. 	else
  224. 	{
  225. 		hBrush = CreateHatchBrush(g_nBrushStyle, g_nBrushColor);
  226. 	}
  227. 	//设置画刷到当前DC
  228. 	HBRUSH hOldBrush = (HBRUSH)SelectObject(hDC, hBrush);
  230. 	//绘制图形
  231. 	//在绘制图形里面根据类型绘制图形
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