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Image within a WPF application displays smaller than when viewed in external viewer

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问题 When I display a JPEG in my WPF application (using the following code), it is shown significantly smaller than if I open the JPEG in the Windows Picture Viewer at actual size. I've drilled into the properties of my ImageSource at runtime and my image has: a DPI of 219 a Height of 238.02739726027397 a Width of 312.54794520547944 a PixelHeight of 543 and a PixelWidth of 713 When I use a screen ruler to measure the WPF display of the image, I get approx. 313x240 pixels (which if I could

Maximum number of rows in a sqlite table

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Give an simple sqlite3 table ( create table data (key PRIMARY KEY,value) ) with key size of 256 bytes and value size of 4096 bytes, what is the limit (ignoring disk space limits) on the maximum number of rows in this sqlite3 table? Are their limits associated with OS (win32, linux or Mac) Nick Dandoulakis In SQLite3 the field size isn't fixed. The engine will commit as much space as needed for each cell . For the file limits see this SO question: What are the performance characteristics of sqlite with very large database files? As of Jan 2017 the sqlite3 limits page defines the practical

Maximum number of rows in a sqlite table

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问题 Give an simple sqlite3 table ( create table data (key PRIMARY KEY,value) ) with key size of 256 bytes and value size of 4096 bytes, what is the limit (ignoring disk space limits) on the maximum number of rows in this sqlite3 table? Are their limits associated with OS (win32, linux or Mac) 回答1: In SQLite3 the field size isn't fixed. The engine will commit as much space as needed for each cell . For the file limits see this SO question: What are the performance characteristics of sqlite with

find out if text of JLabel exceeds label size

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问题 In Java when the text of the JLabel could not be displayed due to lack of space the text is truncated and "..." is added in the end. How can I easily find out if currently JLabel displays full text or the truncated? EDIT: I see that there is a way to find out the size of the text by using FontMetrics . However this solution doesn't fully answers the question. In the case the text of JLabel contains HTML decorations the metrics.stringWidth() would also calculate width of HTML tags. So it could