I am creating a program to print report where I have to draw grid. (I am not using Crystal Report as it's not free of cost). I am new to system.drawing class. I want to draw a text string in a definite width but variable height ractangle. I mean full text should come in ractangle with specifi...more >>

Hi, I want to use InvalidateRect from user32.dll. It seems that it doesn't really invalidate a rectangle. The whole screen can be refreshed with InvalidateRect(IntPtr.Zero,IntPtr.Zero,true). But how can I refresh a rectangle? I need this function because I draw on the desktop and I want t...more >>

Hi, I've been struggling with this problem for days on and off. Hopefully somebody has some insight in this. I have a usercontrol which is placed on a form. When the control gets the paint event, I use a memory bitmap to draw on and then blit it back to the original DC (from the graphics). ...more >>

I am trying to add EXIF properties to my JPEG pictures taken w/ a Canon digital camera. The fields I want to add related to GPS data. I have tried the suggestions listed at: http://www.pixvillage.com/blogs/devblog/archive/2005/03/27/176.aspx I have tried the following: 1) adding an image w...more >>

Hi guys! I am back with an easy question. Pamela I have this task to do. Seems crazy but Later I will explain the reason. Can anybody provide me with a simple answer. I need to create and save to disk a .GIG image, say "blank.gif" the image is a bitmap transparent of any size (even 1x1 wi...more >>

I've a problem converting System.Drawing.Bitmap in System.Drawing.Icon using the GetHicon method. This is my code sample : private void pSetIco(int parNumImg) { System.Drawing.Bitmap b; b=new Bitmap(this.ilIcons.Images[parNumImg]); this.StartIcon.Icon = Icon.FromHandle(b.GetHic...more >>

Hi, I'm having a problem with trying to make the text of a button both bold and italic at runtime. All that i have so far is Button.Font = New Font("sans seriff", 9, FontStyle.Italic), but i need to make it bold as well as italic at the same time. Thanks a lot. ...more >>

Hi all, I have the following code... Bitmap bitmap = new Bitmap((int)new_width, (int)new_height, m_src_image.PixelFormat); m_graphics = Graphics.FromImage(bitmap); m_graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality; m_graphics.InterpolationMode = Syste...more >>

i save a compressed bitmap to an image field in my sql database: ImageCodecInfo iciJPEG; foreach (ImageCodecInfo cdc in ImageCodecInfo.GetImageEncoders()) { if (cdc.MimeType == "image/jpeg") { iciJPEG = cdc; } } EncoderParameters epsQuality = new EncoderParameters(1)...more >>

I'm running a WinCE4.1 Compact Framework application using VS2003. While I run this code, I get an error saying NotSupportedException. private void panel1_Paint(object sender, PaintEventArgs e) { try { Graphics g = this.pictureBox2.CreateGraphics(); g.FillRectangle(new SolidBr...more >>

Greetings, I asked this question earlier in microsoft.public.win32.programming.gdi and was redirected here. So I'll try to piece together the relevant parts of the conversation. The general theme of this question is: performance. I'm noticing GDI+ to be slow. I've been reading alot about h...more >>

Hi all! Can someone give me an idea how to solve my problem? I'm writing my application in VC++ .NET. On my windows form I'm using StretchDIBits to draw a picture in a given place. Then on this picture I'm drawing lines, text (DrawLine,FillPlolygon etc.). The thing is I'm changing the position ...more >>

I'm trying to display a PNG on a form in my VB.NET application, but it = will only display a cropped portion of the image. I'm using the = following: Dim gr As Graphics =3D Me.CreateGraphics Dim img As Image =3D Bitmap.FromFile(<Path to PNG file>) gr.DrawImage(img, CInt(50), CSng(50), CSng(i...more >>

Hello, I am currently doing performance evaluations with Visual Studio 2005 beta2 and .NET 2.0 beta 2. When I paint some thousands of circles to a Windows Form using the graphics object it takes about 4 times longer compared to unmanaged drawing into the device context of the form (using P/In...more >>

What I want to do is to draw a series of bitmaps on top of each other with transparency. I have one bitmap with no alpha data, and a second bitmap with alpha. When I load the bitmap with alpha data into the bitmap structure, the pixel format does not show that the bitmap supports alpha. Whe...more >>

Hi, I have just joined this group , i am very new to this concept of API, GDI, drawing. Can any one guide me from where to start the basic. I want to build a cad project in which i have to make lines , curves, points , 3 point ,4point beizers, rectangles, circles and so on. I want to kno...more >>

I am rorking on a treeview who's nodes can each branch out in a few different directions. Right now I need to determine whether two regions intersect with each other so i can prevent the child nodes (and their child nodes; and so forth) from colliding with each other. all help is apreciated...more >>

My code is the following: public Bitmap myConvertBitmapToGrayscale( Bitmap i) { Bitmap b = new Bitmap(i.Width, i.Height, PixelFormat.Format16bppGrayScale); Graphics g = Graphics.FromImage(b); g.DrawImage(i,0,0); g.Dispose(); return b; } but something's going wrong... ...more >>

Hi, I'm a beginner in graphics programming. I have the following situation: I have to show existing bitmap in the control on the form and then put one or several transparent layers over it which will be used for drawing. Which control to use to load the existing bitmap on o form? Will pictur...more >>

hi, to create my own control i need to derive from System.Windows.Forms.Control but, my control is sooooo simple - it draws only line, a separator-like line, with a custom color and width. i dont need handling any user input and do not use any fancy drawing routines nor i do not implement ...more >>