1、项目属性》连接器》输入》附加依赖项，添加“‘gdiplus.lib’”
2、头文件引入
1 #include <gdiplus.h> 2 3 Gdiplus::GdiplusStartupInput m_GdiInput; 4 ULONG_PTR m_GDIToken;
3、程序入口和结束记得初始化和退出
1 BOOL CGDIPLUSDrawApp::InitInstance() 2 { 3 //GDI+初始化 4 GdiplusStartup(&m_GDIToken, &m_GdiInput, NULL); 5 6 …………………… 7 8 Gdiplus::GdiplusShutdown(m_GDIToken); 9 10 return FALSE; 11 }
4、一些基本GDI+操作
1 void CGDIPLUSDrawDlg::OnPaint() 2 { 3 if (IsIconic()) 4 { 5 CPaintDC dc(this); // 用于绘制的设备上下文 6 7 SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0); 8 9 // 使图标在工作区矩形中居中 10 int cxIcon = GetSystemMetrics(SM_CXICON); 11 int cyIcon = GetSystemMetrics(SM_CYICON); 12 CRect rect; 13 GetClientRect(&rect); 14 int x = (rect.Width() - cxIcon + 1) / 2; 15 int y = (rect.Height() - cyIcon + 1) / 2; 16 17 // 绘制图标 18 dc.DrawIcon(x, y, m_hIcon); 19 } 20 else 21 { 22 CDialogEx::OnPaint(); 23 24 CClientDC dc(this); 25 Gdiplus::Graphics grx(dc.GetSafeHdc()); 26 //获取窗口客户区区域 27 CRect rc; 28 GetClientRect(&rc); 29 30 Gdiplus::Image image(_T("res\\main.png")); 31 grx.DrawImage(&image, Gdiplus::Rect(rc.left, rc.top, rc.Width(), rc.Height())); 32 33 //矢量绘图 34 Gdiplus::Pen hPen(Gdiplus::Color(255, 255, 0, 0)); 35 grx.DrawRectangle(&hPen, Gdiplus::Rect(20, 20, 50, 60)); 36 grx.DrawArc(&hPen, 20, 20, 50, 60, 0, 10); 37 38 //画刷 39 Gdiplus::HatchBrush hatch(Gdiplus::HatchStyleVertical, Gdiplus::Color(255, 0, 255, 0)); 40 grx.FillRectangle(&hatch, Gdiplus::Rect(60,70,50,50)); 41 42 //位图做画刷来画文字 43 Gdiplus::Image txtimage(_T("res\\main.png")); 44 Gdiplus::TextureBrush tbrush(&txtimage); 45 Gdiplus::FontFamily family(_T("宋体")); 46 Gdiplus::Font font(&family, 30); 47 CString strImag = _T("位图画刷，画文本"); 48 grx.DrawString((LPCTSTR)strImag, strImag.GetLength(), &font, Gdiplus::PointF(100, 50), &tbrush); 49 50 //渐变画刷 51 Gdiplus::LinearGradientBrush lingrbrush(Gdiplus::Point(0, 0), Gdiplus::Point(rc.right, rc.bottom), Gdiplus::Color(255, 255, 0, 0), Gdiplus::Color(255, 0, 0, 255)); 52 Gdiplus::Color clrs[] = { 53 Gdiplus::Color(255, 255, 0, 0), 54 Gdiplus::Color(255, 255, 255, 0), 55 Gdiplus::Color(255, 0, 0, 255), 56 Gdiplus::Color(255, 0, 255, 0) 57 }; 58 Gdiplus::REAL pos[] = { 59 0.0f, 60 0.33f, 61 0.66f, 62 1.0f 63 }; 64 lingrbrush.SetInterpolationColors(clrs, pos, 4); 65 grx.FillRectangle(&lingrbrush, Gdiplus::Rect(rc.left - 20, rc.top - 20, rc.Width() - 40, rc.Height() - 40)); 66 67 grx.ReleaseHDC(dc.GetSafeHdc()); 68 } 69 }
