首页 MFC图片显示

MFC图片显示

上传者： zlh869642570 | 上传时间： 2025-02-23 09:56:02 | 文件大小： 47.75MB | 文件类型： ZIP
在MFC（Microsoft Foundation Classes）框架中，显示图片通常涉及到对CImage类或者CDC类的使用，以及对话框控件的交互。以下是一份详细的知识点解析，介绍如何在MFC的对话框中通过按钮来选择和打开图片。 1. **MFC基本概念**： MFC是微软提供的一套C++类库，它基于面向对象编程，用于简化Windows应用程序的开发。它封装了Windows API，提供了一系列的类，如CWinApp、CWnd、CDialog等，帮助开发者构建用户界面。 2. **CDialog类**： CDialog类是MFC中用于创建对话框的基础，对话框通常包含各种控件，如按钮、文本框等。在本例中，我们需要一个对话框来显示图片，并且包含一个按钮控件用于选择图片。 3. **CButton类**： CButton是MFC中的一个控件类，代表Windows中的按钮。我们需要自定义这个按钮的点击事件，以便当用户点击时弹出文件选择对话框。 4. **CFileDialog类**： 当按钮被点击后，我们使用CFileDialog类来创建一个标准的文件打开对话框。通过设置对话框的属性，可以限制用户只能选择图像文件。 5. **CImage类**： MFC中的CImage类用于处理图像，包括加载、显示和保存图像。我们将使用CImage来加载用户选择的图片文件，并在对话框上显示。 6. **OnBnClicked()函数**： 这是MFC中控件消息响应函数的模板，例如，你可以定义一个名为OnBnClickedOpenButton的函数，来响应按钮的点击事件。 7. **图片加载过程**： - 通过CFileDialog的DoModal()方法打开文件选择对话框，获取用户选择的文件路径。 - 然后，使用CImage的Load()方法加载图片到内存。 - 如果加载成功，可以使用CStatic或CDC类来显示图片。CStatic是MFC中的静态文本或图标的控件，可以设置其位图属性来显示图片；而CDC则用于在设备上下文中进行绘图，可以通过BeginPaint()、DrawBitmap()和EndPaint()等函数来显示图片。 8. **对话框的更新**： 在加载图片后，需要更新对话框以显示新的内容。这可能涉及到重绘对话框或特定控件，可以通过InvalidateRect()和UpdateWindow()函数来实现。 9. **异常处理**： 在处理图像文件时，可能出现各种错误，如文件不存在、格式不支持等。因此，代码中应包含适当的异常处理机制，以确保程序的健壮性。 10. **资源管理**： 记住释放CImage对象加载的图片资源，避免内存泄漏。当不再需要图片时，调用CImage的Release()方法。 以上就是关于"MFC图片显示"这一主题的主要知识点。在实际开发中，还需要考虑到用户体验、性能优化、错误处理等方面，确保程序的完整性和稳定性。通过理解并运用这些知识点，你可以在MFC项目中轻松实现图片的加载和显示功能。

文件下载

资源详情

[{"title":"（ 77 个子文件 47.75MB ） MFC图片显示","children":[{"title":"MFC点按钮打开图片","children":[{"title":"Debug","children":[{"title":"Test.pdb <span style='color:#111;'> 4.78MB </span>","children":null,"spread":false},{"title":"Test.exe <span style='color:#111;'> 902.00KB </span>","children":null,"spread":false},{"title":"Test.ilk <span style='color:#111;'> 1.32MB </span>","children":null,"spread":false}],"spread":true},{"title":"ipch","children":[{"title":"test-48562e53","children":[{"title":"test-2434c52c.ipch <span style='color:#111;'> 68.50MB </span>","children":null,"spread":false}],"spread":true}],"spread":true},{"title":"Test.suo.old <span style='color:#111;'> 10.50KB </span>","children":null,"spread":false},{"title":"Test","children":[{"title":"Test.vcxproj.user <span style='color:#111;'> 143B </span>","children":null,"spread":false},{"title":"resource.h <span style='color:#111;'> 902B </span>","children":null,"spread":false},{"title":"Test.vcxproj.filters <span style='color:#111;'> 2.16KB </span>","children":null,"spread":false},{"title":"Debug","children":[{"title":"cl.command.1.tlog <span style='color:#111;'> 3.54KB </span>","children":null,"spread":false},{"title":"link.10284.write.1.tlog <span style='color:#111;'> 2B </span>","children":null,"spread":false},{"title":"link.2880.write.1.tlog <span style='color:#111;'> 2B </span>","children":null,"spread":false},{"title":"Test.exe.embed.manifest <span style='color:#111;'> 667B </span>","children":null,"spread":false},{"title":"TestDlg.obj <span style='color:#111;'> 149.87KB </span>","children":null,"spread":false},{"title":"rc.command.1.tlog <span style='color:#111;'> 1.57KB </span>","children":null,"spread":false},{"title":"CL.read.1.tlog <span style='color:#111;'> 60.75KB </span>","children":null,"spread":false},{"title":"vc100.idb <span style='color:#111;'> 1.14MB </span>","children":null,"spread":false},{"title":"Test.vcxprojResolveAssemblyReference.cache <span style='color:#111;'> 713B </span>","children":null,"spread":false},{"title":"mt.read.1.tlog <span style='color:#111;'> 850B </span>","children":null,"spread":false},{"title":"link.2880-cvtres.read.1.tlog <span style='color:#111;'> 2B </span>","children":null,"spread":false},{"title":"Test.exe.embed.manifest.res <span style='color:#111;'> 732B </span>","children":null,"spread":false},{"title":"Test.write.1.tlog <span style='color:#111;'> 0B </span>","children":null,"spread":false},{"title":"link.10284.read.1.tlog <span style='color:#111;'> 2B </span>","children":null,"spread":false},{"title":"link-cvtres.read.1.tlog <span style='color:#111;'> 2B </span>","children":null,"spread":false},{"title":"link.read.1.tlog <span style='color:#111;'> 8.36KB </span>","children":null,"spread":false},{"title":"rc.read.1.tlog <span style='color:#111;'> 5.74KB </span>","children":null,"spread":false},{"title":"link.write.1.tlog <span style='color:#111;'> 1.29KB </span>","children":null,"spread":false},{"title":"link.10284-cvtres.read.1.tlog <span style='color:#111;'> 2B </span>","children":null,"spread":false},{"title":"Test.pch <span style='color:#111;'> 20.44MB </span>","children":null,"spread":false},{"title":"CL.write.1.tlog <span style='color:#111;'> 1.60KB </span>","children":null,"spread":false},{"title":"Test.obj <span style='color:#111;'> 28.95KB </span>","children":null,"spread":false},{"title":"link.2880.read.1.tlog <span style='color:#111;'> 2B </span>","children":null,"spread":false},{"title":"Test.log <span style='color:#111;'> 1.12KB </span>","children":null,"spread":false},{"title":"vc100.pdb <span style='color:#111;'> 2.29MB </span>","children":null,"spread":false},{"title":"link.10284-cvtres.write.1.tlog <span style='color:#111;'> 2B </span>","children":null,"spread":false},{"title":"link.5368-cvtres.write.1.tlog <span style='color:#111;'> 2B </span>","children":null,"spread":false},{"title":"link.command.1.tlog <span style='color:#111;'> 2.49KB </span>","children":null,"spread":false},{"title":"Test.exe.intermediate.manifest <span style='color:#111;'> 381B </span>","children":null,"spread":false},{"title":"link.5368.write.1.tlog <span style='color:#111;'> 2B </span>","children":null,"spread":false},{"title":"link.5368-cvtres.read.1.tlog <span style='color:#111;'> 2B </span>","children":null,"spread":false},{"title":"Test_manifest.rc <span style='color:#111;'> 198B </span>","children":null,"spread":false},{"title":"mt.write.1.tlog <span style='color:#111;'> 316B </span>","children":null,"spread":false},{"title":"Test.res <span style='color:#111;'> 39.79KB </span>","children":null,"spread":false},{"title":"stdafx.obj <span style='color:#111;'> 555.75KB </span>","children":null,"spread":false},{"title":"Test.lastbuildstate <span style='color:#111;'> 54B </span>","children":null,"spread":false},{"title":"mt.command.1.tlog <span style='color:#111;'> 1.04KB </span>","children":null,"spread":false},{"title":"link.2880-cvtres.write.1.tlog <span style='color:#111;'> 2B </span>","children":null,"spread":false},{"title":"link.5368.read.1.tlog <span style='color:#111;'> 2B </span>","children":null,"spread":false},{"title":"rc.write.1.tlog <span style='color:#111;'> 626B </span>","children":null,"spread":false},{"title":"link-cvtres.write.1.tlog <span style='color:#111;'> 2B </span>","children":null,"spread":false}],"spread":false},{"title":"Test.rc <span style='color:#111;'> 5.38KB </span>","children":null,"spread":false},{"title":"Test.vcproj <span style='color:#111;'> 5.41KB </span>","children":null,"spread":false},{"title":"stdafx.h <span style='color:#111;'> 1.80KB </span>","children":null,"spread":false},{"title":"ReadMe.txt <span style='color:#111;'> 2.65KB </span>","children":null,"spread":false},{"title":"Test.vcproj.DONGLIANG.WangZheng.user <span style='color:#111;'> 1.38KB </span>","children":null,"spread":false},{"title":"res","children":[{"title":"Test.rc2 <span style='color:#111;'> 360B </span>","children":null,"spread":false},{"title":"bitmap2.bmp <span style='color:#111;'> 1.24KB </span>","children":null,"spread":false},{"title":"icon1.ico <span style='color:#111;'> 1.05KB </span>","children":null,"spread":false},{"title":"bitmap1.bmp <span style='color:#111;'> 28.47KB </span>","children":null,"spread":false},{"title":"Test.ico <span style='color:#111;'> 21.12KB </span>","children":null,"spread":false}],"spread":true},{"title":"Test.cpp <span style='color:#111;'> 1.81KB </span>","children":null,"spread":false},{"title":"stdafx.cpp <span style='color:#111;'> 135B </span>","children":null,"spread":false},{"title":"Test.h <span style='color:#111;'> 554B </span>","children":null,"spread":false},{"title":"Test.aps <span style='color:#111;'> 670.96KB </span>","children":null,"spread":false},{"title":"TestDlg.h <span style='color:#111;'> 691B </span>","children":null,"spread":false},{"title":"Test.vcxproj <span style='color:#111;'> 7.95KB </span>","children":null,"spread":false},{"title":"TestDlg.cpp <span style='color:#111;'> 3.96KB </span>","children":null,"spread":false},{"title":"targetver.h <span style='color:#111;'> 1.01KB </span>","children":null,"spread":false}],"spread":false},{"title":"Test.sdf <span style='color:#111;'> 57.33MB </span>","children":null,"spread":false},{"title":"Test.sln <span style='color:#111;'> 879B </span>","children":null,"spread":false},{"title":"Test.sln.old <span style='color:#111;'> 878B </span>","children":null,"spread":false},{"title":"_UpgradeReport_Files","children":[{"title":"UpgradeReport.xslt <span style='color:#111;'> 12.21KB </span>","children":null,"spread":false},{"title":"UpgradeReport_Plus.gif <span style='color:#111;'> 71B </span>","children":null,"spread":false},{"title":"UpgradeReport.css <span style='color:#111;'> 3.27KB </span>","children":null,"spread":false},{"title":"UpgradeReport_Minus.gif <span style='color:#111;'> 69B </span>","children":null,"spread":false}],"spread":true},{"title":"Test.suo <span style='color:#111;'> 15.00KB </span>","children":null,"spread":false},{"title":"Test.ncb <span style='color:#111;'> 23.00MB </span>","children":null,"spread":false},{"title":"UpgradeLog.XML <span style='color:#111;'> 1.48KB </span>","children":null,"spread":false}],"spread":false}],"spread":true}]

评论信息

其他资源

免责申明

【只为小站】的资源来自网友分享，仅供学习研究，请务必在下载后24小时内给予删除，不得用于其他任何用途，否则后果自负。基于互联网的特殊性，【只为小站】 无法对用户传输的作品、信息、内容的权属或合法性、合规性、真实性、科学性、完整权、有效性等进行实质审查；无论 【只为小站】 经营者是否已进行审查，用户均应自行承担因其传输的作品、信息、内容而可能或已经产生的侵权或权属纠纷等法律责任。
本站所有资源不代表本站的观点或立场，基于网友分享，根据中国法律《信息网络传播权保护条例》第二十二条之规定，若资源存在侵权或相关问题请联系本站客服人员，zhiweidada#qq.com，请把#换成@，本站将给予最大的支持与配合，做到及时反馈和处理。关于更多版权及免责申明参见 版权及免责申明

个人信息

下载历史

相关资源标签

热门下载

最新下载