BitBlt WinAPI function performs a bit-block transfer of the color data corresponding to a rectangle of pixels from the specified source device context into a destination device context.
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Using BitBlt to capture screenshot, how?
I have run into this "BitBlt" from time to time in my searched, but i don´t get how to use it.
From what people say, it seems to be the fastest way to capture a screen that Windows show.
However, i ...
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62 views
BitBlt Printer.Canvas to a TBitMap displays as solid white
I am trying to capture Printer.Canvas as a Bitmap using BitBlt. I want to then take that Bitmap and display it on a paintbox. However, when I attempt this I am given only a white rectangle ...
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30 views
BitBlt captures layered window in XP but not 7
I'm using BitBlt to capture the Windows desktop. I'm not using CAPTUREBLT because I don't want to copy my layered window in the image. In Windows 7 with DWM off this works fine, but in XP my window ...
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43 views
TransparentBlt Produces a Non-Sharp Image
I'm rendering text (using TextRenderer.DrawText) onto a Bitmap which was back-colored solid White (Color.White) using the FillRectangle method.
I then TransparentBlt this Bitmap onto a memory-DC ...
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78 views
Using BitBlt to Scroll Text over a Picture Backrgound
My user-control is intended to operate as a smooth vertical text scroller.
It renders the text (to be scrolled) to control's surface only once, using TextRenderer.DrawText.
It then starts a timer, ...
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33 views
Blitting the contents of Windows magnifier
My Windows program copies the contents of windows using GetDC then BitBlt. This works fine for most windows, but with magnifier windows I get a blank screen. This happens whether it's a magnifier I ...
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40 views
Bitblt from directx application
I got that code to get the pixel color from current mouse position.
It works well but the only problem is, I can't get it from an d3d application...
I tried it few times, but it only get only black ...
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62 views
Are there any bitblt alternatives without the slowness?
Recently it's come to my attention that bitblt is extrodinarily slow (taking around 33 ms for 1 image) and I know it's not that my hardware is too slow because it runs games with decent graphics at ...
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85 views
Get pixel color at mouse position fastest way
So actually i got a very fast and nice code from "Vodemki" in here -
Get Pixel color fastest way?
But only problem it scans the whole image while i need to scan only
my current mouse position
Here's ...
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44 views
Is it possible to fix black screenshots?
I'm currently trying to capture a fullscreen game with antialiasing mode activated via BitBlt, but it returns a black screenshot. If I disable the antialiasing, the screenshot works perfectly.
Any ...
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211 views
c# gdi32 bitblt seems to do nothing
I'm trying to use BitBlt to get regions of a graphics and store them in bitmaps.
But here, I do something easier to understand my problem:
Bitmap sourceBitmap = new Bitmap(64, 64, ...
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VB.NET using bitblt to draw bitmap renders a black square
I'm just starting out with VB.net after many years of VB 6.0 and I thought I'd get started with some graphics.
Just for fun I'm using BitBlt to draw a bitmap I have loaded as a resource and draw it ...
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93 views
how to store bitmap assets in vb.net?
I used to use VB 6.0 and now I'm switching to .net and I'm finding lots of things have changed. Back in the day, I used to store graphics assets in pictureboxes, make them invisible, and then bitblt ...
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65 views
How to save hdc and restore it?
I write an application to draw line, rect, ellipse in client area. I need save image of client area when i draw any thing. And I restore it when message WM_PAINT occur.
I use HBITMAP to save and ...
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124 views
BitBlt returns false, GetLastError returns 6 (Invalid handle)?
It's been a few years since my last foray into GDI, but I don't remember having an issue like this before. I am not getting an exception, but BitBlt is returning 0 (False), checking GetLastWIN32Error ...
