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可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I've found a lot of information about using GLUT to detect whether the Ctrl key is pressed using the GLUT_ACTIVE_CTRL macro. This macro only works, apparently, within a keyboard or mouse callback function. I need to know whether or not the Ctrl key is pressed at a point in my main loop, but GLUT_ACTIVE_CTRL doesn't seem to work in this context. So, is there a way to detect key up and key down events on the Ctrl key (without any other keys being typed) in a platform independent GLUT-ish way? EDIT: The keyboard callback is not fired (at least

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Just wondering whether anyone could tell me how to capture the long keypress of the volume down key in android. Elaborated question: I wanted to create a BroadcastReceiver which will receive volume long keypress event. (without any UI interaction). I know it's possible for the search button. is it available for the Volume Keys? Thanks 回答1: may be below code will help you: @Override public boolean onKeyLongPress(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) { // to your stuff here return true; } return super

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: All packages are not available for download! The following packages are not available: - Package id sources;android-24 Am trying getting data from database by using of web services, when am running the application getting an above shown error. How can I resolve this issue in the android studio? 回答1: The popup error is not related to the exception you got on your application. Api 24 source code is not fully available. Hence you got the error. Change complieSdkVersion and targetSdkVersion to 23 and sync the gradle. 回答2: Open SDK Manager -> SDK

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: The maven repository appears to be down. Trying to fetch data from the following url results in an error: https://download.01.org/crosswalk/releases/crosswalk/android/maven2/org/xwalk/xwalk_core_library/maven-metadata.xml Is this temporary or does this have to do with crosswalk no longer being developed? => Errors executing Cordova commands: While building Cordova app for platform Android: Error:/Users/fullhdpixel/Projects/MyRoutes/.meteor/local/cordova-build/platforms/android/gradlew: Command failed with exit code 1 Error output: FAILURE:

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I need to round down a decimal in PHP to two decimal places so that: 49.955 becomes... 49.95 I have tried number_format , but this just rounds the value to 49.96 . I cannot use substr because the number may be smaller (such as 7.950). I've been unable to find an answer to this so far. Any help much appreciated. 回答1: This can work: floor($number * 100) / 100 回答2: Here is a nice function that does the trick without using string functions: An other option is to subtract a fraction before rounding: function floorp($val, $precision) { $half = 0.5

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: It seems that my app, Evograph shuts down automatically when no clients are present on the site. However, it restarts shortly after someone visits. For example, I routinely notice the it's "down," and upon checking back a few minutes later, everything is functional. What may be causing this? My site requires sustained hosting - how may I fix it? Thanks! 回答1: This is the normal behaviour on sites hosted by the meteor deploy service. As the service is free at the moment there is no guaranteed SLA (see https://groups.google.com/forum/#!msg

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a web application which has a memory leak somewhere and I am unable to detect it. I already tried the Chrome developer tools which normally works great, but I am unable to track down the lines of code which are responsible. The Chrome tools just give me too much information and I can't relate the objects in memory to my code. Are there any other tools that might be helpful? 回答1: update: Lets use Record Heap Allocations profile type. open devtools profiler do a warm-up action start profiler repeat action a few times if the action has a

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Since the JavaFx Media has not been ported to the Mobile Platforms yet, can anyone help me with using the native iOS APi's to play a sound mp3 file that would be stored in my main/resources folder in my gluon project. 回答1: While on Android we can easily add native API to the Android folders of a Gluon project (check this solution for using native Media on Android), the use of native code (Objetive-C) with the Media API on iOS folders is not enough, since it has to be compiled, and the compiled files have to be included into the ipa.

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am trying to create a Drop down list, that when a user holds the SHIFT key, it will select the same index on all other drop down lists. Currently, I am doing the following: $(document).on('keyup keydown', function (e) { shifted = e.shiftKey }); $(document).on('change', '.report_info select', function (e) { if (shifted) { //Code to change other drop down lists. } }); This only works if you press and hold the shift key before you enter the drop down list. If you are inside the DDL and press the shift key, the keyup/keydown event will not

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: So in short i'm simply trying to move a rectangle around a Canvas object in a WPF application. What i have here is my KeyDown event function. The problem is, when i hold a key down for long, it launches this function over and over again rapidly and screws up my rectangle location code. My theory/logic behind it: BECAUSE WHEN YOU HOLD A BUTTON DOWN ON A KEYBOARD IT DOES NOT MOVE SMOOTHLY (TEST IT ON THE SCROLL BAR IN YOUR BROWSER, IT STARTS, pauses, THEN CONTINUES SMOOTHLY), i want it to start a forms timer that moves the object in the UI.