Http://doc.qt.io/qt-5/highdpi.htmlQt Support
Ability to provide pixmaps or artwork for high Resolution:see Drawing High resolution Versions of Pixmaps and Images.
Qt 5.4 introduces experimental support for scaling by-device pixel ratio similar to OS X to the platform plugins for Wi Ndows and Unix (XCB). This was controlled by the environment variable QT_DEVICE_PIXEL_RATIO . It can be set to a numerical value to being used as scale factor or "auto" which causes the scale factor to be
With technology in power generation, many PCs or tablets are now configured with high-resolution display screens, and many friends will set up a larger DPI (especially on a small size screen) to make the fonts on the screen look clearer when Windows is installed. Although some software interfaces may have blurred problems after setting a larger dpi, some settings allow them to be displayed in their original
Reference: http://www.cnblogs.com/greatverve/archive/2011/12/28/android-dip-dp-sp-pt-px.htmlHttp://www.360doc.com/content/15/0713/09/26211242_484580697.shtmlArticle content for reference onlyDpi==>device independent pixels (device independent pixels), different devices have different display effect, this and equipment hardware;Generally in order to support WVGA, HVGA and QVGA recommend this, do not rely on pixels;DPI, which can also be understood as p
As a pad product, the screen is 7-inch and the resolution is 1024*600. The Code provided by the chip manufacturer is running, but the visual effect is very poor. At first glance, we can see that the wallpaper has been severely stretched, and the color block and sawtooth of the image are obvious, at first it was suspected that the screen driver was not properly tuned and the driver was specially optimized for the LCD driver, but the problem was not significantly improved. Finally, the system calc
Conceptual interpretation
Noun
Explain
Px(Pixel pixels)
Different devices show the same effect. The "Same" here means that the number of pixels does not change, such as specifying a UI length of 100px, regardless of the resolution of the UI length is 100px. This is why the UI is magnified and distorted on small-resolution devices, and is scaled down at large resolutions.
Screen Size(Screen size)
Generally speaking, the size of a mobile pho
Release a software for batch processing of image printing resolutions (DPI)
Purpose: When you insert an image into a word, you may find that the inserted image is larger or smaller. Very difficult. The reason is that when word is processing an image, the DPI of the image is 96 by default, so for an image with 72dpi, it will become larger when it is inserted into word; for a picture with 300dpi, it w
The screen has a fixed physical long width attribute and resolutionLike a computer, like a phone screen.For example, the phone screen size is 1.5 inches x2 inches, the screen resolution is 240x320,Then you can calculate the number of pixels per inch (dpi) in the horizontal direction: 240/1.5=160, can also calculate the vertical direction per inch1PX refers to a pixel on the screen, the principle of screen imaging is through the screen dense pixel poin
What is DPI:The DPI English full name is "dots per inch", literally "pixels per inch", which means the pixels per inch. (1-inch =2.54cm), refers to the inside of the mouse decoding device can identify the length of pixels per inch. (The smallest unit on the screen is a pixel). This is a static unit, so this parameter is typically applied to printers and scanners.To give a simple example: Join us using 400dpi Microsoft IE3, then the mouse on the mouse
The default font size for the WINDOWS7 operating system is 96 pixels, so we face a very big problem: the default 96-pixel font size of the Win7 operating system makes it hard to read text or do text-related operations with a high split screen. Long-time operations can cause damage to our eyesight. To solve the problem mentioned above, we can adjust the text size on the screen by adjusting the DPI setting of the Win7 .
Operation Steps
1, "Desktop spa
Release date:Updated on:
Affected Systems:Cyberoam DPIDescription:--------------------------------------------------------------------------------Bugtraq id: 54291Cve id: CVE-2012-3372
The Cyberoam UTM device has multiple security features on the same platform, including firewall, VPN, IPS, anti-virus programs, anti-spam, Web filtering, and broadband management.
Cyberoam DPI has a Security Restriction Bypass Vulnerability. After successful exploita
In WPF, webbrowser itself has some defects and cannot adapt to DPI. The specific reason will be added later. First paste the code and how to use it. (Very irresponsible first post code... Make it clear later)
The method is: first load an empty html. After loading the HTML, perform the zoom of webbrowser and then load the URL you want to load.
namespace WebbrowserTest{ public class WebBrowserZoomInvoker { [DllImport("user32.dll")] s
Android manual density (dpi) modification method, androiddensitydpi
In the Android system, the default density is set based on the screen resolution range, which is 320 (xhdpi). You can also manually modify the density.
Modify the ro. sf. LCD _density VALUE IN system. prop;
For example, ro. sf. LCD _density = 480;
We can use the adb command to query this attribute:
Adb shell getprop ro. sf. LCD _density
How to Set
Is the higher the Resolution, the clearer it is? Is the higher the pixel, the clearer the DPI?
Pixels refer to the basic unit of color (and unit pixels). 100 pixels are 100 single points, but not 100 pixels are greater than 10 pixels, because there is no limit on the size of a single point. This introduces another concept: Point distance.
If the point-through distance is the same, the larger the resolution, that is, the larger the number of pixels,
Before using the WMI object, you must add a reference to System. Management, and then you can call the WMI Object.The WMI object we use is: win32_shorttopmonitor.Object Reference: http://msdn.microsoft.com/zh-cn/library/Aa394122Code:Static void Main (string [] args ){
Using (ManagementClass mc = new ManagementClass ("Win32_DesktopMonitor ")){Using (ManagementObjectCollection moc = mc. GetInstances ()){
Int PixelsPerXLogicalInch = 0; // dpi for xInt Pi
same.Px:pixels (pixels). Different devices show the same effect, generally we hvga represent 320x480 pixels, this use more.sp:scaled pixels (enlarge pixels). Mainly used for font display of best for textsize.In the Android Typedvalue.java class, there is one of the following methods:public static float applydimension (int unit, float value, displaymetrics metrics){Switch (unit) {Case COMPLEX_UNIT_PX:return value;Case COMPLEX_UNIT_DIP:return value * metrics.density;Case COMPLEX_UNIT_SP:return va
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