How can I get a color from a hexadecimal color code (eg #FFDFD991 )? I am reading a file and am getting a hexadecimal color code. I need to create the corresponding System.Windows.Media.Color instance for the hexadecimal color code. Is there an inbuilt method in the framework to do this? I'm assuming that's an ARGB code... Are you referring to System.Drawing.Color or System.Windows.
我如何从十六进制颜色代码中获取颜色（例如#FFDFD991 ）？ 我正在阅读一个文件并获取十六进制颜色代码。 我需要为十六进制颜色代码创建相应的System.Windows.Media.Color实例。 在框架中是否有内置方法来执行此操作？ 我假设这是一个ARGB代码...你指的是System.Drawing.Color或System.Windows.Media.Color ？ 后者用于WPF中。 我还没有看到任何人提到它，所以以防万一你正在寻找它： using System.Windows.Media; Color
I was recently looking at wrapper classes and googled the following page...http://wiki.developerforce.com/page/Wrapper_Class While I understood wrapper classes, I was baffled by the following... public List<cContact> getContacts() { if(contactList == null) { contactList = new List<cContact>(); for(Contact c: [select Id, Name, Email, Phone from Contact limit 1
我最近正在查看包装类并搜索了以下页面... http：//wiki.developerforce.com/page/Wrapper_Class 虽然我理解包装类，但我对以下内容感到困惑...... public List<cContact> getContacts() { if(contactList == null) { contactList = new List<cContact>(); for(Contact c: [select Id, Name, Email, Phone from Contact limit 10]) { // As each contact is processed we cre
I am developing windowform application in c#. In my app, i have written below code to get all image from local machine and print it. files = Directory.GetFiles(@"C:temp", "*.jpeg"); foreach (var i in files) { var objPrintDoc = new PrintDocument(); objPrintDoc.PrintPage += (obj, eve) => { System.Drawing.Image img = System
我正在C＃中开发windowform应用程序。 在我的应用程序中，我编写了下面的代码以从本地机器获取所有图像并打印出来。 files = Directory.GetFiles(@"C:temp", "*.jpeg"); foreach (var i in files) { var objPrintDoc = new PrintDocument(); objPrintDoc.PrintPage += (obj, eve) => { System.Drawing.Image img = System.Drawing.Image.FromFile(
I am writing a loadable kernel module for Linux. And I need to store some data for each task in Linux kernel (These data would be used in a scheduler callback). I know that I can modify struct task_struct and insert my own fields. But since I am willing to write a relatively clean kernel module, I cannot modify any code resides in original Linux source tree. It is also possible to maintain
我正在为Linux编写一个可加载的内核模块。 我需要为Linux内核中的每个任务存储一些数据（这些数据将用于调度程序回调）。 我知道我可以修改struct task_struct并插入我自己的字段。 但是由于我愿意编写一个相对干净的内核模块，因此我无法修改原始Linux源代码树中的任何代码。 也可以维护某种从struct task_struct到哈希表中的数据的映射。 但它似乎有点太重。 我已经阅读了Linux内核模块中的Thread本地数据的答案。
This code is supposed to convert a RGB color to an hex in the 5:6:5 format. 5 bits for red, 6 bits for green, 5 bits for blue. I have no idea why this is not picturing the correct color. Does anyone knows why? int rgb(unsigned char r, unsigned char g, unsigned char b) { if (r < 0 || 255 < r || g < 0 || 255 < g || b < 0 || b > 255) return -1; int result;
此代码应该将RGB颜色转换为5：6：5格式的十六进制。 红色5位，绿色6位，蓝色5位。 我不知道为什么这不能描绘出正确的颜色。 有谁知道为什么？ int rgb(unsigned char r, unsigned char g, unsigned char b) { if (r < 0 || 255 < r || g < 0 || 255 < g || b < 0 || b > 255) return -1; int result; int red = r * 31 / 255; int green = g * 63/ 255; int blue = b * 31
In C#, the console has properties that can be used to change the background color of the console, and the foreground (text) color of the console. Console.BackgroundColor // the background color Console.ForegroundColor // the foreground/text color The issue is that background color applies only where text is written, not to free space. Console.BackgroundColor = ConsoleColor.White; // background
在C＃中，控制台具有可用于更改控制台背景颜色和控制台前景（文本）颜色的属性。 Console.BackgroundColor // the background color Console.ForegroundColor // the foreground/text color 问题在于背景颜色仅适用于写入文本的位置，而不适用于释放空间。 Console.BackgroundColor = ConsoleColor.White; // background color is white Console.ForegroundColor = ConsoleColor.Blue; // text color is blue 现在，通过上
This question sounds easy, but it is not as simple as it sounds. Brief summary of what's wrong For an example, use this board; http://pinterest.com/dodo/web-designui-and-mobile/ Examining the HTML for the board itself (inside the div with the class GridItems ) at the top of the page yields: <div class="variableHeightLayout padItems GridItems Module centeredWithinWrapper" style=".."
这个问题听起来很容易，但并不像听起来那么简单。 对什么是错的小结 举一个例子，使用这个板子; http://pinterest.com/dodo/web-designui-and-mobile/ 检查页面顶部的电路板本身的HTML（在类GridItems的div内）得出： <div class="variableHeightLayout padItems GridItems Module centeredWithinWrapper" style=".."> <!-- First div with a displayed board image --> <div class="item" style=
I'm trying to run hello world program on ARM computer with Linux (Debian Wheezy). The libc version on it is 2.13, while my own computer has 2.15 (Ubuntu Precise). I installed arm-linux-gnueabi-gcc on my computer and compiled the application with static linkage. All my attempts to run compiled binary result in "cannot execute binary file" message. However, QEMU on my own compute
我试图在Linux上使用Linux（Debian Wheezy）在ARM计算机上运行hello world程序。 它的libc版本是2.13，而我自己的电脑有2.15（Ubuntu Precise）。 我在我的电脑上安装了arm-linux-gnueabi-gcc，并使用静态链接编译应用程序。 我所有试图运行编译后的二进制结果都是“无法执行二进制文件”消息。 但是，我自己的计算机上的QEMU（qemu-arm-static）成功运行应用程序。 我认为它应该足以静态链接我的应用程序。 权限是755.我
Our organization has a required coding rule (without any explanation) that: if … else if constructs should be terminated with an else clause Example 1: if ( x < 0 ) { x = 0; } /* else not needed */ Example 2: if ( x < 0 ) { x = 0; } else if ( y < 0 ) { x = 3; } else /* this else clause is required, even if the */ { /* programmer expects this will never be reach
我们的组织有一个必要的编码规则（没有任何解释）： if ... else如果构造应该用else子句终止 例1： if ( x < 0 ) { x = 0; } /* else not needed */ 例2： if ( x < 0 ) { x = 0; } else if ( y < 0 ) { x = 3; } else /* this else clause is required, even if the */ { /* programmer expects this will never be reached */ /* no change in value of x */ } 这个设计要处理什
如果不使用结果值， i++和++i之间是否存在性能差异？ Executive summary: No. i++ could potentially be slower than ++i , since the old value of i might need to be saved for later use, but in practice all modern compilers will optimize this away. We can demonstrate this by looking at the code for this function, both with ++i and i++ . $ cat i++.c extern void g(int i); void f() { int i; fo
如果不使用结果值， i++和++i之间是否存在性能差异？ 内容提要：没有。 i++可能是慢++i ，因为旧的价值i可能需要被保存以备后用，但实际上所有的现代编译器将优化送人。 我们可以通过查看这个函数的代码来证明这一点，用++i和i++ 。 $ cat i++.c extern void g(int i); void f() { int i; for (i = 0; i < 100; i++) g(i); } 这些文件是相同的，除了++i和i++ ： $ diff i++.c ++i.c 6c6 < for