screen-capture

BitBlt ignores CAPTUREBLT and seems to always capture a cached copy of the target

こ雲淡風輕ζ 提交于 2019-11-30 09:12:14
问题 I am trying to capture screenshots using the BitBlt function. However, every single time I capture a screenshot, the non-client area NEVER changes no matter what I do. It's as if it's getting some cached copy of it. The client area is captured correctly. If I close and then re-open the window, and take a screenshot, the non-client area will be captured as it is. Any subsequent captures after moving/resizing the window have no effect on the captured screenshot. Again, the client area will be

How to capture part of the screen and save it to a BMP? [duplicate]

瘦欲@ 提交于 2019-11-30 07:30:53
Possible Duplicate: how to make screen screenshot with win32 in c++? I am currently trying to create an application that saved a portion of the screen to a bmp. I have found BitBlt but I really don't know what to do with it. I have tried searching for some answers but I still haven't found a clarifying one using C++. So, basically I want this function: bool capturePartScreen(int x, int y, int w int, h, string dest){ //Capture part of screen according to coordinates, width and height. //Save that captured image as a bmp to dest. //Return true if success, false if failure } BitBlt: BOOL BitBlt(

headless chrome capture screen video or animation

为君一笑 提交于 2019-11-30 02:27:50
I try to capture some animations from a website and stitch them together using ffmpeg. As far as I understand the docs startScreencast is the way to go. If I understand that right I can start the screencast with await Page.startScreencast({format: 'png', everyNthFrame: 1}); and listen to every incoming frame with Page.screencastFrame(image =>{ const {data, metadata} = image; console.log(metadata); }); But it's never prints out something. So I assume it's not called. I archived my goal with something like this: let counter = 0; while(counter < 500){ await Page.startScreencast({format: 'png',

GetFrontBufferData returns black screen on any game

随声附和 提交于 2019-11-29 18:37:38
I am writing a screen capture application. I used the code mentioned on this link for the application. Following is my entire code for your reference: // WangsNotesScrCapt2.cpp : Defines the entry point for the application. // #include "stdafx.h" #include "WangsNotesScrCapt2.h" //include d3d library #include <d3d9.h> #include <d3dx9tex.h> #include <dinput.h> //link d3d library #pragma comment (lib, "d3d9.lib") #pragma comment (lib, "D3dx9.lib") #define MAX_LOADSTRING 100 #define WM_KEYDOWN 0x0100 // Global Variables: HINSTANCE hInst; // current instance TCHAR szTitle[MAX_LOADSTRING]; // The

BlackBerry screen shot utility - from a desktop computer

混江龙づ霸主 提交于 2019-11-29 16:18:58
I am looking for a screen shot tool that I can use to capture screens from my BlackBerry Tourch 9850. I have tried using the included JavaLoader utility with my SDK but I receive "Retrieving screen <active> data ... Error: buffer too small" errors. I have also tried using the BBScreenShooter v1.67 (I think this is the latest version) but it fails to capture the screen, then crashes. I need the tool to create a user manual for some software we're developing for BlackBerrys and, as they say, "a picture is worth a thousand words." If nothing else, perhaps someone knows how to address the small

BitBlt ignores CAPTUREBLT and seems to always capture a cached copy of the target

萝らか妹 提交于 2019-11-29 13:31:40
I am trying to capture screenshots using the BitBlt function. However, every single time I capture a screenshot, the non-client area NEVER changes no matter what I do. It's as if it's getting some cached copy of it. The client area is captured correctly. If I close and then re-open the window, and take a screenshot, the non-client area will be captured as it is. Any subsequent captures after moving/resizing the window have no effect on the captured screenshot. Again, the client area will be correct. Furthermore, the CAPTUREBLT flag seems to do absolutely nothing at all. I notice no change with

Capture screen of Window by handle

て烟熏妆下的殇ゞ 提交于 2019-11-29 12:04:41
I'm trying to capture only a specific Window in the desktop but I'm getting a mixed image, part of window and part desktop area. What am I missing? Here's my code: RECT rect = new RECT(); if (!SetForegroundWindow(handle)) throw new Win32Exception(Marshal.GetLastWin32Error()); if (!GetWindowRect(handle, out rect)) throw new Win32Exception(Marshal.GetLastWin32Error()); Thread.Sleep(500); Rectangle windowSize = rect.ToRectangle(); Bitmap target = new Bitmap(windowSize.Width, windowSize.Height); using (Graphics g = Graphics.FromImage(target)) { g.CopyFromScreen(0, 0, 0, 0, new Size(windowSize

How to capture part of the screen and save it to a BMP? [duplicate]

偶尔善良 提交于 2019-11-29 09:15:21
问题 Possible Duplicate: how to make screen screenshot with win32 in c++? I am currently trying to create an application that saved a portion of the screen to a bmp. I have found BitBlt but I really don't know what to do with it. I have tried searching for some answers but I still haven't found a clarifying one using C++. So, basically I want this function: bool capturePartScreen(int x, int y, int w int, h, string dest){ //Capture part of screen according to coordinates, width and height. //Save

VLC screen capture using terminal

南笙酒味 提交于 2019-11-29 00:40:03
问题 I'm attempting to capture my screen as video and found VLC to probably be the best solution. What I have to do is capture a specific application using terminal and then stop the capture as well. Right now, I can capture using terminal with the following command: /Applications/VLC.app/Contents/MacOS/VLC -I dummy screen:// --screen-fps=25 --quiet --sout "#transcode{vcodec=h264,vb072}:standard{access=file,mux=mp4,dst="Desktop/vlc-output-terminal.mp4"}" That's great, it works. The question is,

headless chrome capture screen video or animation

你离开我真会死。 提交于 2019-11-28 23:23:52
问题 I try to capture some animations from a website and stitch them together using ffmpeg. As far as I understand the docs startScreencast is the way to go. If I understand that right I can start the screencast with await Page.startScreencast({format: 'png', everyNthFrame: 1}); and listen to every incoming frame with Page.screencastFrame(image =>{ const {data, metadata} = image; console.log(metadata); }); But it's never prints out something. So I assume it's not called. I archived my goal with