gdi+

来源： https://stackoverflow.com/questions/64449973/c-sharp-gdi-multiple-translatetransform

来源： https://stackoverflow.com/questions/63720333/graphics-measurestring-doesnt-include-some-parts-of-some-chars

来源： https://stackoverflow.com/questions/63816737/overlaid-parts-of-text-get-transparent-gdi

问题 I can't understand why the shadow path has thorns near the Arrow Cap. Refer to my screenshot. using (GraphicsPath _Path = new GraphicsPath()) { Point[] _Points = new Point[] { new Point { X = mouseDownX, Y = mouseDownY }, new Point { X = lineEndX - 51, Y = mouseDownY }, new Point { X = lineEndX - 51, Y = mouseDownY - 20 }, new Point { X = lineEndX, Y = mouseDownY + 5}, new Point { X = lineEndX -51, Y = mouseDownY + 25}, new Point { X = lineEndX -51, Y = mouseDownY +10 }, new Point { X =

问题 Issue: Attempting to zoom (scale) an Image from (or at the) mouse location using transforms in the Paint event to translate bitmap origin to mouse location, then scale the Image and translate its origin back. The Image jumps and fails to scale from the relocated origin when translating the mouse location. Rotate, scale, and pan function correctly without translating to the the mouse location. Running on .Net 4.7.2, using Visual Studio in Windows 10 1909 v18363.778 The relevant code blocks:

问题 From the documentation of Image.FromHbitmap() at http://msdn.microsoft.com/en-us/library/k061we7x%28VS.80%29.aspx : The FromHbitmap method makes a copy of the GDI bitmap; so you can release the incoming GDI bitmap using the GDIDeleteObject method immediately after creating the new Image. This pretty explicitly states that the bitmap handle can be immediately deleted with DeleteObject as soon as the Bitmap instance is created. Looking at the implementation of Image.FromHbitmap() with Reflector

问题 I have created a program to draw square grids on a selected image. It works fine for images that has small resolution, but it doesn't work properly on large images. The all grid lines are not visible seem when the image is saved as file. The image I am testing has resolution 3600x4320 and can be shown in the link. How can I fix this problem? My code: Image drawGrid(int n, string imgPath) { Image img = Image.FromFile(imgPath); Graphics grp = Graphics.FromImage(img); grp.SmoothingMode = System

问题 I have created a program to draw square grids on a selected image. It works fine for images that has small resolution, but it doesn't work properly on large images. The all grid lines are not visible seem when the image is saved as file. The image I am testing has resolution 3600x4320 and can be shown in the link. How can I fix this problem? My code: Image drawGrid(int n, string imgPath) { Image img = Image.FromFile(imgPath); Graphics grp = Graphics.FromImage(img); grp.SmoothingMode = System

问题 I am currently using Graphics, Image, Color, and Bitmap Gdi+ classes in my C++ Application, but whenever I try to use BrightnessContrast and BrightnessContrastParams I get errors: In Intellisense: Error: Namespace 'Gdiplus' has no member 'BrightnessContrast' When Compiling: 'BrightnessContrast' : is not a member of 'Gdiplus' What gives? I did find a forum post that said to add a line to "Additional Manifest Dependencies:" in the project properties, I did this but it still didn't work. The

问题 I am currently using Graphics, Image, Color, and Bitmap Gdi+ classes in my C++ Application, but whenever I try to use BrightnessContrast and BrightnessContrastParams I get errors: In Intellisense: Error: Namespace 'Gdiplus' has no member 'BrightnessContrast' When Compiling: 'BrightnessContrast' : is not a member of 'Gdiplus' What gives? I did find a forum post that said to add a line to "Additional Manifest Dependencies:" in the project properties, I did this but it still didn't work. The