emWin V5.20图形库用户与参考指南
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emWin是由SEGGER Microcontroller GmbH & Co. KG开发的一款图形库，专为嵌入式系统提供图形用户界面（GUI）的功能。这份文档是UM03001用户与参考指南，针对软件版本V5.20进行编写，文档修订至第2版，发布日期为2013年3月8日。该指南详细介绍了如何利用emWin创建和管理图形界面，包括窗口、控件、布局和事件处理等方面。
emWin作为一个图形库，它允许开发人员在嵌入式设备上构建直观、高效的用户界面，这对于许多工业控制、消费电子和物联网应用至关重要。用户手册涵盖了以下几个关键知识点：
1. **入门与安装**：指南首先介绍了如何安装和配置emWin在开发环境中，确保兼容性和性能优化。
2. **图形组件**：涵盖了各种图形元素，如窗口（Window）、按钮（Button）、文本框（Text Field）、滑块（Slider）和图像显示（Bitmap），以及如何创建和定制这些基本UI元素。
3. **布局管理**：讨论了如何组织和定位控件，实现响应式布局，适应不同屏幕尺寸和分辨率。
4. **事件处理**：详细解释了如何通过回调函数或消息机制来处理用户的交互，如点击、触摸、键盘输入等。
5. **主题与皮肤**：emWin支持自定义主题，以适应不同的品牌和设计风格，提升用户体验。
6. **性能与内存管理**：提供了优化代码以减少内存消耗和提高运行速度的最佳实践，这对于资源受限的嵌入式系统尤其重要。
7. **API与编程接口**：文档详述了C/C++ API，让开发者能够深入了解其工作原理，并提供示例代码来加速学习过程。
8. **跨平台支持**：尽管针对的是嵌入式环境，但emWin也考虑到了兼容性问题，确保在多种微控制器平台上的一致性。
9. **免责声明与版权**：文档强调了信息的准确性和可能的更新，但不保证完全无误，并声明了版权和使用限制，禁止未经许可的复制或修改PDF文件。
emWin V5.20用户与参考指南是一份全面且实用的文档，旨在帮助开发者充分利用其图形库功能，打造高效、用户友好的嵌入式应用程序。通过遵循文档中的指导，开发者可以有效地将复杂的界面操作简化为嵌入式系统的实际应用。
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UM03001 User & Reference Guide for emWin V5.20 © 1997 - 2013 SEGGER Microcontroller GmbH & Co. KG
10.9 ’SIF’ file related font functions..................................................................205
10.10 ’TTF’ file related font functions .................................................................207
10.11 ’XBF’ file related font functions.................................................................210
10.12 Common font-related functions ................................................................212
10.13 Character sets .......................................................................................216
10.13.1 ASCII ...................................................................................................216
10.13.2 ISO 8859-1 Western Latin character set....................................................216
10.13.3 Unicode ................................................................................................218
10.14 Font Converter.......................................................................................219
10.14.1 Adding fonts..........................................................................................219
10.15 Standard fonts.......................................................................................220
10.15.1 Font identifier naming convention.............................................................220
10.15.2 Font file naming convention.....................................................................221
10.15.3 Measurement, ROM-size and character set of fonts .....................................221
10.15.4 Proportional fonts...................................................................................222
10.15.4.1 Overview ..............................................................................................222
10.15.4.2 Measurement, ROM size and used files......................................................222
10.15.4.3 Characters ............................................................................................224
10.15.5 Proportional fonts, framed.......................................................................230
10.15.5.1 Overview ..............................................................................................230
10.15.5.2 Measurement, ROM size and used files......................................................230
10.15.5.3 Characters ............................................................................................230
10.15.6 Monospaced fonts ..................................................................................231
10.15.6.1 Overview ..............................................................................................231
10.15.6.2 Measurement, ROM size and used files......................................................232
10.15.6.3 Characters ............................................................................................233
10.15.7 Digit fonts (proportional).........................................................................238
10.15.7.1 Overview ..............................................................................................238
10.15.7.2 Measurement, ROM size and used files......................................................238
10.15.7.3 Characters ............................................................................................238
10.15.8 Digit fonts (monospaced) ........................................................................240
10.15.8.1 Overview ..............................................................................................240
10.15.8.2 Measurement, ROM size and used files......................................................240
10.15.8.3 Characters ............................................................................................240
11 Font Converter...........................................................................................................243
11.1 Requirements ........................................................................................244
11.2 Using the Font Converter.........................................................................245
11.2.1 Creating an emWin font file from a Windows font .......................................245
11.2.2 Font generation options dialog .................................................................247
11.2.2.1 Type of font to generate..........................................................................247
11.2.2.2 Encoding...............................................................................................248
11.2.2.3 Antialiasing ...........................................................................................248
11.2.3 Font Dialog............................................................................................248
11.2.3.1 Font, Font Style, and Size .......................................................................249
11.2.3.2 Script ...................................................................................................249
11.2.3.3 Unit of Size ...........................................................................................249
11.2.4 User Interface........................................................................................249
11.2.4.1 Selecting the current character ................................................................249
11.2.4.2 Toggling character status ........................................................................249
11.2.4.3 Selecting pixels......................................................................................250
11.2.4.4 Modifying character bits ..........................................................................250
11.2.4.5 Operations ............................................................................................250
11.2.4.6 Modifying the viewing mode ....................................................................251
11.3 Options.................................................................................................251
11.3.1 Saving the font ......................................................................................252
11.3.1.1 Creating a C file .....................................................................................252
11.3.1.2 Creating a System Independent Font (SIF) ................................................253
11.3.1.3 Creating an External Binary Font (XBF) .....................................................253
11.3.2 Modifying an existing C font file................................................................254
11.3.3 Merging fonts with existing C font files ......................................................255
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