I'm attempting to draw an image using StretchDIBits with an Enhanced Meta File handle as the HDC to my OnDraw function using C++ and Visual Studio 2008. I load the .bmp source file using GDIplus and using GetHBITMAP. If I use the HDC returned by BeginPaint there are no problems. If I draw the bitmap upright, flipped horizontally, or fli...
Hello! For some reason if I call on a 600 dpi image: myImage.SetResolution(72, 72) It gives me "A generic error occurred in GDI+". Moreover, if I try to create a new 72 dpi bitmap, create graphics object from that and use DrawImage to draw original 600 dpi image in the graphics object created from the new bitmap, I also get this err...
I am rendering stuff with a Graphics-object in a picturebox inside the Paint-event for that picturebox. void pictureBox1_Paint(object sender, PaintEventArgs e) { Graphics g = e.Graphics; g.FillEllipse(color, x, ...); etc etc...... } Everything works fine but suddenly the picturebox turns white and ...
First I used SSRS to render a TIFF document and found out although it is possible to pass colour depth parameter to SSRS 2005 or 2008, it discards it and always generates a 24bpp file. Without luck, got this 24bpp file generated by SSRS render method, loaded it on a System.Drawing.Bitmap object and successfully scaled it to 1728 pixels b...
I have some JPEG files that I can't seem to load into my C# application. They load fine into other applications, like the GIMP. This is the line of code I'm using to load the image: System.Drawing.Image img = System.Drawing.Image.FromFile(@"C:\Image.jpg"); The exception I get is: "A generic error occurred in GDI+.", which really isn't...
A picture for reference of the current state of the game: http://h.imagehost.org/0524/td.jpg I'm developing a simple 2D hobby (personal) game in C# that uses GDI+ for rendering since I decided that I would focus mostly on the gameplay, and not so much the immersion and graphics/UI. Now, however, I got most of the gameplay ready, and I w...
I have a Windows media player activex component in my Form. On top of this WM player i have a picturebox with background color set to transparent. When i set an image for this picturebox , thought the image contains transparent areas it is displayed as black when the picturebox is above the WM player component. Where as if i place the P...
I am writting code in c++, gdi+. I make use of Image's GetThumbnail() method to get thumbnail. However, I need to convert it into HBITMAP. I know the following code can get GetHBITMAP: Bitmap* img; HBITMAP temp; Color color; img->GetHBITMAP(color, &temp); // if img is Bitmap* this works well。 But how can I convert Image* into Bitm...
I want to capture an image of the screen, however there are some wpf controls in my application that I do not want to appear in the screenshot. Using the code below, the hidden controls will sometimes still appear in the screenshot. How do I ensure that this doesn't happen? Window window = new Window(); Button button = new Button(); vo...
How to Convert a Bitmap-like struct into an HDC? I am now writting image processing program in c++, gdi. If I got a HDC. I can draw whatever I like on the HDC in gdi by the following code. // HDC is handy. HDC dc; dc.DrawXXX // I can draw using gdi method. Graphics gr(dc); // now I can also draw on the dc using gdi+ method. My...
I use a transparent background for the PictureBox control. But I also want to be able to paint with a %50 opacity blue FillRectangle. How to do this? ...
Hi, I am trying to generate a PDF using XSL(XML-FO) to transform a generated XML from a database. Because of complex rules in terms of paging for this document, calculations are done in determining the page breaks when I generate the XML that will be consumed by the XSL. I have noticed that I've been getting inconsistent results with ...
I'd like to use the image property tag constants defined in GDI+ from .NET. I wonder whether these constant values (e.g. PropertyTagGpsVer constant) are exposed in any of the Base Class Library? I have tried looking around System.Drawing.Imaging namespace to no avail. ...
Good Day, I have some small transparent gif images (under 100x100) and wrote the following code to iterate through all the pixels to give me the RGB values: private void IteratePixels(string filepath) { string dataFormat = String.Empty; Bitmap objBitmap = new Bitmap(filepath); int counter = 0; for (int y = 0; y < objBit...
When I draw a string into a buffer, the resulting output is not anti-aliased the way I'd expect. This code illustrates the problem... just put this in a standard smart device project's Form1.cs: protected override void OnPaint(PaintEventArgs e) { Bitmap buffer = new Bitmap(Width, Height, PixelFormat.Format32bppRgb); using(Graphics g...
I have a problem with a control leaking GDI handles. This is the cut-down version of the control: Public Class FancyLabel Inherits Label Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs) e.Graphics.TextRenderingHint = Drawing.Text.TextRenderingHint.ClearTypeGridFit MyBase.OnPaint(e) ...
I am trying to copy an Image value to draw on it and on second draw ignore the last one and start over on top of the preserved Image value. I.e.: Image with 4 rectangle (ImageA) -> draw a circle return to ImageA -> draw a rectangle now there are 5 rectangles I don't know if it's the optimal way to draw too? ...
Is there any way where i can create a thumbnail image from a flash movie file(flv /swf) [NOT FROM A VIDEO File ] in ASP.NET ? Any samples of implementation ? ...
When you have code like: Bitmap bmp = new Bitmap ( 100, 100 ); Graphics g = Graphics.FromImage ( bmp ); Pen p = new Pen ( Color.FromArgb ( 128, Color.Blue ), 1 ); Brush b = new SolidBrush ( Color.FromArgb ( 128, Color.Blue ) ); g.FillEllipse ( b, 0, 0, 99, 99 ); g.FillRegion ( b, pictureBox1.Region ); pictureBox1.BackColor = Colo...
I am writing program in gdi+ c++. how can I know two Font* p1, Font* p2 are the same. p1 and p2 are points of different address. p1 p2 point to different object:) ...