hi,
I have got the solution to extract each frame and its property from a
multiple-frame gif picture now.
But how can I generate a multiple-frame gif picture with some images
using gdi+.
Sample code is appreciated.
thank you!
hi, how can I generate a multiple-frame gif picture using gdi+
4 posts
• Page 1 of 1
- WINDOWS VISTA
- windows ce
- Win32 Programming
- WINDOWS SERVER
- MS Office Access
- ace
- MS WORD
- Computer architecture
- MS SQL SERVER
- mac
Jump to:
- 1. GDI+ and loading PNG images from an IStream
IImageBytes should not optional. If QI failes for IID_IImageBytes, decoding should be able to continue. Is this not the case? > ----- > I was using a custom istream that implemented IUnknown, ISequentialStream, > IStream. when loading the png, gdi+ was querying for a IImageBytes (defined > in GdiplusImaging.h). why does the png loader section of gdi+ use this, and > no other image loader ? ask MS :-) This posting is provided "AS IS" with no warranties, and confers no rights. - 2. Constructing Gdiplus::Font with HFONT
For some reason this just isn't working for me. I can do the following just fine and see the string in the window: void CLUIImageTextOverlay::DrawOverlay( Graphics* g ) { // create brush SolidBrush* myBrush = new SolidBrush( Color( mAlpha, GetRValue(mColor), GetGValue(mColor), GetBValue(mColor))); // create font Gdiplus::Font font( "Arial", 12 ); // draw g->DrawString( mText, mText.Length(), &font, PointF(0, 0), (Brush*)myBrush ); } But, if I try and create a Font object using a HFONT, the string doesn't show up. I traced into DrawString and status is set to OK so I'm not quite sure what's going on. Here's the code: void CLUIImageTextOverlay::DrawOverlay( Graphics* g ) { // create brush SolidBrush* myBrush = new SolidBrush( Color( mAlpha, GetRValue(mColor), GetGValue(mColor), GetBValue(mColor))); // create font Gdiplus::Font font( g->GetHDC(), &mFont ); // draw g->DrawString( mText, mText.Length(), &font, PointF(0, 0), (Brush*)myBrush ); } Note that mFont in the Font constructor is an HFONT which is created in a call to: mFont = (HFONT) GetStockObject( DEFAULT_GUI_FONT ); Hope someone can help here. I'm pulling my hair out trying to figure it out. -Mark - 3. bitmap.MakeTransparent() OutOfMemory
When ever I use this method I get an out of memory exception, it doesn't seem to matter what kind of image I use, large or small, i'm currently using a 100X100 image and it still runs out of memory, or well throws that exception Example // previous code defines Bitmap tr Color topLeft = b.GetPixel(5,5) b.MakeTransparent(topLeft) this.pictureBox1.Image = b catch(Exception ex MessageBox.Show(ex.ToString()) finall b.Dispose() I remember once reading that the OutOfMemory exception is a default for other exceptions, is that true I really hope someone can help me with this because I haven't made any headway on this issue in an age Many thanks (to all those great people who help me out, yah boo to the rest Jax
Next
hi, how can I generate a multiple-frame gif picture using gdi+
by philip » Fri, 03 Sep 2004 10:01:03 GMT
Re: hi, how can I generate a multiple-frame gif picture using gdi+
by Paul » Fri, 03 Sep 2004 11:47:04 GMT
On Thu, 2 Sep 2004 09:01:03 +0800, "philip" < XXXX@XXXXX.COM > Here's an MS example of creating a multiframe image: http://www.**--****.com/
Re: hi, how can I generate a multiple-frame gif picture using gdi+
by philip » Sat, 04 Sep 2004 09:36:23 GMT
Thank you . But the sample code you provided is to create tiff image, not gif image. I once tried this sample code, the tiff image i created is only a container for all image without animation. So, do you have the sample code for creating "GIF" animation image. Thank you again! ----- Original Message ----- From: "Paul" < XXXX@XXXXX.COM > Newsgroups: microsoft.public.win32.programmer.gdi Sent: Thursday, September 02, 2004 10:47 AM Subject: Re: hi, how can I generate a multiple-frame gif picture using gdi+ http://www.**--****.com/
Re: hi, how can I generate a multiple-frame gif picture using gdi+
by Paul » Sat, 04 Sep 2004 13:50:34 GMT
On Fri, 3 Sep 2004 08:36:23 +0800, "philip" < XXXX@XXXXX.COM > Creating a multipage image is similar whether you're creating a TIFF or GIF, which is why I linked the example. When encoding specify image/gif instead of image/tiff. GIF also have a propertyitem (PropertyTagFrameDelay) for each frame and a loop count for the entire image.
4 posts
• Page 1 of 1
Who is online
Users browsing this forum: No registered users and 6 guest