his back i 读者来函 新竹市. 高翠路. 刘嘉均 1996 年11 月，我在书店看到了深入浅出MFC 这本书，让我想起自己曾经暗暗告诉过自 己：Application Framework 真是一个好东西。我在书店驻足察看这本书五分钟之后，我便知 道这本书是一定要买下的。适巧我工作上的项目进度也到了一个即将完成的阶度，所以我便 一口气将这本书给读完了，而且是彻彻底底读了两遍。 的processor。所以，我对Intel 8086, 8051 系列及Motorola 68000 系列的assembly 语言比较熟悉，而对framework 这样的软件 制造思想和手段一直并不熟悉。近来偶有机会加入一个project，要生成在Win95 下运行的 代码，因此，想尝试一下使用framework 构造软件。很幸运，我找到了您的书。讲VC++ MFC 的书很多，但能像您这样做到「深入浅出」的，实在很少。看您的书，是享受。我手里这本 API 函数后，结合MFC 框架编程？ 侯俊杰回复：的确如此。MFC 其实就是把Windows API 做了一层薄薄包装，包装于各个设 计良好的classes 而已。所以，掌握了MFC framework 架构组织之后，接下来在programming 实务方面，就是去了解并运用各个classes，而各个classes 的member functions 有许多就是 Windows APIs

libraries One example of a build requirement could be a testing framework, which is implemented as a library. Let’s call it mytest_framework, an existing Conan package. Build requirements can be checked with the following build() method: def build(self): cmake = CMake(self) enable_testing = "mytest_framework" in self.deps_cpp_info.deps cmake.configure(defs={"ENABLE_TESTING": enable_testing}) cmake.build() the mytest_framework nor build the tests, for normal installation: $ conan install . But if the following profile is defined: Listing 2: mytest_profile [build_requires] mytest_framework/0.1@user/channel

libraries One example of a build requirement could be a testing framework, which is implemented as a library. Let’s call it mytest_framework, an existing Conan package. Build requirements can be checked with the following build() method: def build(self): cmake = CMake(self) enable_testing = "mytest_framework" in self.deps_cpp_info.deps cmake.configure(defs={"ENABLE_TESTING": enable_testing}) cmake.build() the mytest_framework nor build the tests, for normal installation: $ conan install . But if the following profile is defined: Listing 2: mytest_profile [build_requires] mytest_framework/0.1@user/channel

libraries One example of a build requirement could be a testing framework, which is implemented as a library. Let’s call it mytest_framework, an existing Conan package. Build requirements can be checked with the following build() method: def build(self): cmake = CMake(self) enable_testing = "mytest_framework" in self.deps_cpp_info.deps cmake.configure(defs={"ENABLE_TESTING": enable_testing}) cmake.build() the mytest_framework nor build the tests, for normal installation: $ conan install . But if the following profile is defined: Listing 2: mytest_profile [build_requires] mytest_framework/0.1@user/channel

libraries One example of a build requirement could be a testing framework, which is implemented as a library. Let’s call it mytest_framework, an existing Conan package. Build requirements can be checked with the following build() method: def build(self): cmake = CMake(self) enable_testing = "mytest_framework" in self.deps_cpp_info.deps cmake.configure(defs={"ENABLE_TESTING": enable_testing}) cmake.build() the mytest_framework nor build the tests, for normal installation: $ conan install . But if the following profile is defined: Listing 2: mytest_profile [build_requires] mytest_framework/0.1@user/channel

libraries One example of a build requirement could be a testing framework, which is implemented as a library. Let’s call it mytest_framework, an existing Conan package. Build requirements can be checked with the following build() method: def build(self): cmake = CMake(self) enable_testing = "mytest_framework" in self.deps_cpp_info.deps cmake.configure(defs={"ENABLE_TESTING": enable_testing}) cmake.build() the mytest_framework nor build the tests, for normal installation: $ conan install . But if the following profile is defined: Listing 2: mytest_profile [build_requires] mytest_framework/0.1@user/channel

the graph (with conan info --graph). 8.3.4 Example: testing framework and build tool One example of build requirement is a testing framework implemented as a library, another good example is a build tool tool used in the compile process. Let’s call them mytest_framework and cmake_turbo, and imagine we already have a package available for both of them. Build requirements can be checked for existence (whether method: def build_requirements(self): if self.options.enable_testing: self.build_requires("mytest_framework/0.1@user/channel", force_host_context=True) def build(self): # Use our own 'cmake_turbo' if it

the graph (with conan info --graph). 8.3.4 Example: testing framework and build tool One example of build requirement is a testing framework implemented as a library, another good example is a build tool tool used in the compile process. Let’s call them mytest_framework and cmake_turbo, and imagine we already have a package available for both of them. Build requirements can be checked for existence (whether method: def build_requirements(self): if self.options.enable_testing: self.build_requires("mytest_framework/0.1@user/channel", force_host_context=True) def build(self): # Use our own 'cmake_turbo' if it

the graph (with conan info --graph). 8.3.4 Example: testing framework and build tool One example of build requirement is a testing framework implemented as a library, another good example is a build tool tool used in the compile process. Let’s call them mytest_framework and cmake_turbo, and imagine we already have a package available for both of them. Build requirements can be checked for existence (whether method: def build_requirements(self): if self.options.enable_testing: self.build_requires("mytest_framework/0.1@user/channel", force_host_context=True) def build(self): # Use our own 'cmake_turbo' if it