GDI + Drawing Introduction System.Drawing namespace Common classes in the System.Drawing namespace: Common structures in the System.Drawing namespace: Graphics class Pen class Brush class Font class PictureBox image control Bitmap class Introduction GDI (Graphics Device Interface) image device interface, which is a drawing API. The System.Drawing namespace provides access to the basic graphics functions of […]
Tag: gdi+
win32 – use GDI+ to play gif pictures
I encountered such a problem when I was doing a case today, so I recorded it. Codeproject has a similar case, but it is compiled using the MFC template. Because we only need win32 programs, so…. the code is as follows: CodeProject: Play GIF using GDI+ The other is implemented using double buffering, I have […]
Use GDI+ (WIC) to load 32-bit bitmap or PNG image (with transparency channel)
#include <windows.h> #include <gdiplus.h> HBITMAP LoadBitmapFromResource(DWORD ResourceID, bool transparent = true) { HANDLE hGlobal = NULL; ULONG_PTR GDIToken = 0; Gdiplus::Image* Img = NULL; Gdiplus::GdiplusStartupInput GDIStartInput = NULL; Gdiplus::GdiplusStartup( &GDIToken, &GDIStartInput, NULL); HRSRC hResource = FindResource(NULL, MAKEINTRESOURCE(ResourceID), “BINARY”); if (!hResource) {<!– –>return NULL;} HGLOBAL hFileResource = LoadResource(NULL, hResource); if (!hFileResource) {<!– –>return NULL;} LPVOID lpFile […]
Win32 – Use of GDI+ Gaussian Blur
Although GDI+ is marked in the title, it is not actually used in the actual implementation. However, the relevant documentation of GDI+ has some API instructions about Gaussian blur, see the link below: Blur class (gdipluseffects.h) Using the Blur class, you can apply a Gaussian blur effect to a bitmap and specify the nature of […]
Graphics class of C# GDI+ programming
Recently, I need to use the function of C#DrawLine to draw a straight line. I don’t know much about this. Let me record the problems encountered when using it. The basic part of drawing lines has been written before in “C# Self-study Notes (Forty) Windows Drawing”, if you are interested, you can read it I […]
Preliminary Research on Font Size Adaptive Scheme under GDI+
At a certain moment, I suddenly discovered that the Three-Body Problem or AI are very similar things in essence. Even when facing any unknown field, human beings will always be divided into Adventists, Salvationists and Survivorists unconsciously. Regardless of the real motives of Musk and others to stop GPT-5, when the big language model (LLM) […]
Baumer industrial camera Baumer industrial camera how to use BGAPI SDK and the Image class image compression algorithm in the GDI+ library to compress and save the image (C++)
Baumer industrial camera Baumer industrial camera how to use BGAPI SDK and Image class image compression algorithm in GDI + library to compress and save images (C++) Baumer industrial camera Baumer industrial camera and GDI+ library image compression technology background code analysis Step 1: First reference the corresponding GDI + library Step 2: Convert the […]
[Solved] .Net Core saves pictures through GDI+ and reports errors in CentOS 7 Docker environment [Solved]
Before, I made a file upload interface in the netcore3.1 environment to store files such as user avatars; debugging on the development machine (windows10) was normal, but deployed to the centos7 container docker environment, and found that the front-end debugging request 500 The internal error of the server, The type initializer for ‘Gdip’ threw an […]
[Solved] Image.Save() with “System.Runtime.InteropServices.ExternalException A generic error occurred in GDI+”
Article table of contents Phenomenon reason solve Phenomena code // buff is a byte[] that stores jpeg file data MemoryStream ms = new MemoryStream(buff); Image img = Image.FromStream(ms); ms.Close(); string path = “D:\test.jpg”; // An exception occurred when executing the Save method img.Save(path); exception information A generic error occurred in GDI+. “System.Runtime.InteropServices.ExternalException” (in System.Drawing.dll) Reason […]