C# :: Bitmap To Desktop?
Mar 24, 2014
I've been using code that takes a bitmap and then changes the color:
private void GetPixel(Bitmap ProcessedBitmap)
{
unsafe
{
[Code].....
Instead of using a Bitmap image (jpg, png, etc), I would like to use the desktop. I'm trying to scan my desktop for a pixel color using lockbits (GetPixel was way too slow.). I also do not wish to change the color of anything, I just want to loop until the pixel is found (with my getpixel method, I just put an if/then statement in the for loop). Something like:
if((CurrentPixel.R == 0xff) && (CurrentPixel.G == 0xff) && (CurrentPixel.B == 0xff)) Then
MsgBox("Pixel Found!")
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Feb 12, 2013
I want to develop windows application using c# ,.net framework 3.5 as front and Mysql4.1 as a backed language.Now my question is i want to install this application only on server PC,so is it possible to access this application within LAN connected PC.If yes how do i build my application.or do i need to install .net framework on LAN connected PC's(or on client PC's)
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Jul 10, 2013
I have a CFormView derived window which I would like to position at run time. In particular when the user clicks a button I would like to shfit the CFormView window and open up a new Dialog window so that the two do not overlap.
I have created the CFormView window and the dialog window - how to shfit the CFormView window?
I shift the Dialog window as follows in OnInitDialog: SetWindowPos(NULL, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOZORDER);
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Nov 11, 2014
I'm struggling with the pan gesture in a desktop application for my Surface Pro 2.
I simply want to pan (or "swipe" if you prefer) with two fingers, but it doesn't behave like I want it to. If I put two fingers on the screen and move them straight diagonally, I receive a series of client coordinates that are aligned in a vertical or horizontal direction. Only if I perform some circular motion, then it's suddenly possible to move diagonally and receive coordinates accordingly.
I've tried with MFC, by overriding CView::OnGesturePan. I've also tried with a sample project provided by Intel, that handles the GID_PAN message in WndProc to move a rectangle around, but with the very same result. The project can be downloaded from [URL] ... fordesktop.zip, so you can quickly reproduce the behaviour if you have a touch screen.
Code:
void GestureHandler::handlePan(HWND hWnd, GESTUREINFO gi) {
if (gi.dwFlags & GF_BEGIN) {
m_first.x = gi.ptsLocation.x;
m_first.y = gi.ptsLocation.y;
[Code] .....
I first thought it had to do with the points being too close to each other. I mean, if two points lies only one pixel apart, it can only result in eight different directions. But if I modify the code to only update "m_first" when the distance between the points are greater than some minimum distance, the points still keep being projected to a horizontal or vertical line relative to the first starting point.
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Jul 5, 2013
write a program that will connect my laptop to my desktop unlike gotomypc.com. I want to have my desktop hooked up to a router and sends video and audio info to my laptop. At the same time my laptop will be sending it's keyboard and mouse. If there is an audio input from a microphone it will send that to the desktop. If the webcam needs to be used for something like Skype, it will send that to the desktop too. I think it would be faster for the laptop to process any flash drives, but it should be able to send that to the desktop too. Has a program like this already been created? Is C++ an optimal language to write the program in?
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May 5, 2013
I plan on creating a desktop application that utilizes external hardware such as cameras and scanners and captures pictures and scans for use within the application. Is using straight C++ the way to go, or would a mixture between C++ and C# be beneficial? (I heard they can be used in conjunction but is it more hassle than benefit?)
Is GUI development any better in one language over the other? I am hoping to be able to choose a language with less installation requirements for the end user.
I understand that certain requirements are placed on the end users computer depending on what you are developing with (I would be using Visual Studio 2012).
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Sep 26, 2014
i want to send SMS from APP Using Iphone. i can send SMS from andriod but when i connect Iphone so COM PORT can't be detected.
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Aug 8, 2012
I have 2 database. One is on live server and the other on local desktop.
User can make changes in database offline on local desktop.
But later he wants to move his changes to live server and also get the updates done on live server by other users. How can this be accomplished? What algorithm can be applied?
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Oct 9, 2012
How can I do this??
Suppose I have Win2008server and many users from defferent domains log in, so every user has its own session.
How can I obtain from the session the domain name of the user who logged in to server??
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Aug 22, 2014
I am trying to re-size a bitmap image for a class.They gave us two options to use to do the program with: an array or move the file position indicator. I want to use the file option. All the bitmap header info is checking out. The file after being re-sized should be 822 bytes but it is 1.6 KiB and the image is distorted.
Code:
#include <stdint.h>
/**
* Common Data Types
*
* The data types in this section are essentially aliases for C/C++
* primitive data types.
[Code]...
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Apr 8, 2013
I don't mean how do I load a bmp, I mean how does SDL manage to do this?
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Jan 7, 2014
How to draw a rectangle and covert to an image and that image saved into word file?
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May 25, 2013
I have a function that essentially takes a screen shot and saves a pointer to it as a structure. I would like to use the same structure for bitmaps that I load from files.
Code:
typedef struct _BITMAPCAPTURE {
HBITMAP hbm;
LPDWORD pixels;
INT width;
INT height;
} BITMAPCAPTURE;
BOOL CaptureScreen(BITMAPCAPTURE* bmpCapture) {
[code].....
The handle to the bitmap, as well as the width and height are all easy enough to get but I'm unsure of how to get the pixels.
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Jan 21, 2012
Writing a program to negate a bitmap image. The program as I have it is asking the user to input a value for the RGB values. But how do I set it up to give the negative of each colour? It has been suggested using the & operator to negate the image inside nested loops.
Also, the RGBQUAD structure was copied into my main program from a BITMAP.H file we were given. However, is it okay just to leave that in the .h file, and just call it from my main program ....if that makes sense?
Anyway, here is my code so far
#include <iostream>
#include <fstream> //Used for file I/O
#include <cstdlib> //For exit
#include <string>
#include <algorithm> // for remove_if
#include <cctype> // for iswspace
[Code] ....
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Oct 21, 2013
I need to be able to take a bitmap e.g. "untitled.bmp" (bit depth: 24) and loop through every pixel from top left to bottom right and find the rgb (or hex) value for each pixel e.g. (255,255,255) for white and store this rgb (or hex) value in a two-dimensional array depending on its [column]and[row].
How to read bitmap data in in c++ . Also, I'm reluctant to use windows header files as I'd prefer it to be cross-platform.
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Jun 24, 2014
C# Code
[DllImport("dllTestForm.dll", EntryPoint = "showFormC")]
static extern void testShowFormC(byte[] photo,int len);
private void button6_Click(object sender, EventArgs e) {
Bitmap bmp = (Bitmap)Image.FromFile(@"d:11.jpg");
Rectangle rect = new Rectangle(0, 0, bmp.Width, bmp.Height);
[Code] ....
The program has no tip errors ,But there is no any picture display in c++ form,Tested the simple data types, such as int, can be normal .
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Aug 6, 2014
I need to calculate the average brightness of a defined area in a bitmap. Is there a way to select the area which a watermark is going to be applied to, and then find it's average brightness?
I have the below code, but at the moment Color pixel is displaying 0, 0, 0 for RGB, I believe i'm doing it wrong, I have tried to use this as a reference but use part of the image instead of the entire image.
See Company Watermark region!
public void addWatermark() {
Image source = Image.FromFile("C:UsersMartyn BallDesktopImages 38.JPG");
Image watermark1 = Image.FromFile(Glb_venueWatermark);
Image watermark2 = Image.FromFile(Glb_companyWatermark);
//Get width and height of image
int sourceWidth = source.Width; int sourceHeight = source.Height;
[code]....
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Nov 3, 2014
I've been given the task of converting a java application to a c# windows form application. The program displays a Mandelbrot which then allows the user to zoom into. I've managed to display the Mandelbrot and even zoom. However when dragging a box to zoom, the box its self doesn't show, meaning the user cannot see what area they will be zooming into.
I believe I need to call the update function which draws the rectangle as I drag however no matter what I try, I get errors from a red cross instead of the Mandelbrot to compile errors. Here is the code that I believe is relevant.
public void update(Graphics g) {
Color color = Color.White;
Pen myPen = new Pen(color);
g.DrawImage(myBitmap, 0, 0);
if (rectangle) {
[Code]....
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Dec 15, 2013
I'm trying to create a dialog where some of the buttons have pictures on them, rather than plain text. I notice that under the button's properties, under the "styles" tab there's a checkbox "bitmap". I can't seem to find any easy way of setting a bitmap.
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Apr 17, 2014
I am trying to do this:
while(1)
{
CaptureScreenshot (as BMP)
Convert screenshot to 24 bit instead of 32 bit
Resize screenshot size
Get the BMP bits array of the resized screenshot
}
I have it working but the best i could get is 18 iteration (screenshots) per second. This is what i do:
Code:
Start() {
ULONG_PTR gdiplusToken=0;
HDC mhCompatibleDC;
HBITMAP mhCompatibleBitmap;
HWND mhDesktopWnd;
HDC mhDesktopDC;
byte*piRGB=new byte[1200*900*3]
[Code] .....
Here i do things with piRGB but these things are not counted it the timer so you can assume here the code ends . As said as the code looks now, i can fill piRGB ~18 times (18loops) in 1 second. I must improve that...
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May 19, 2014
I have this code, where I capture window and make copy to bitmap of it. I am working on rotation of bitmap. But my problem is that when I save the image to file the result is just a black screen. It looks like there could be some problem either in GdipCreateBitmapFromHBITMAP() or GdipGetImageGraphicsContext()
How to fix it and to get the rotated image?
Code:
// CODE 81 and 82 de facto no difference
#defineCODE85 // 81
#defineWINDOW_MIN_HEIGHT200
[Code].....
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Oct 5, 2012
I wrote a simple clock that shows the time over bitmap as follows:
Code:
void CMyClock::OnPaint()
{
CRect rect;
GetClientRect(&rect);
[Code]....
Now I got rid off the white border but everytime I draw a text it write on top of the previous text so after few seconds everything is a mess and the time is no longer readable.
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Jul 31, 2014
I want to develop an application which can host multiple views of explorer (window), where as each window is totally separate from others. So that I can have multiple desktop views through my single explorer. Any built in feature in .NET ?
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Mar 9, 2014
I wanna write a piece of code in C++ that extract the width and height of a image with bmp file format...
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Feb 10, 2013
I have an SDI / CView app (VS 2010). All works well until I minimize the app using the minimize button or drag it partially off of the screen. In the former instance, any attempt to restore the app results in an appcrash with a tight freeze up of the machine. In the later instance the same happens immediately.
In building the app, I scoured the web for code to accomplish the loading and display of the bitmap. After some experimentation I settled on overriding the OnPaint. Below is the code. Note that m_Map is a CBitmap member and IDB_BITMAP1 is a loaded bitmap resource.
Code:
void CMyDragViewView::OnPaint()
{
// CPaintDC dc(this); // device context for painting
// TODO: Add your message handler code here
// Do not call CView::OnPaint() for painting messages
// http://msgroups.net/microsoft.public.vc.mfc/loading-bitmaps-into-main-window/563285
int x = m_Map.LoadBitmap(IDB_BITMAP1);
TRACE1(" x = %d
", x);
CPaintDC* dc = new CPaintDC(this);
[code]....
I suspect that the problem is OnPaint trying to repaint the bitmap which requires reloading it, but I don't know how to work around this.
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Jul 5, 2013
I have a CScrollView that displays a bitmap and I'm trying to draw a grid that I can turn off and on by check box and when the mouse is over a section of the grid that square highlights... I do all the drawing in the ondraw function... But when I have many grid squares it becomes slow to scroll and to highlight the square the mouse is over... I'm not sure the best way to go about this and where to place code to speed it up... The bitmap is only loaded once... But in ondraw the grid has to redraw every time scrolled and when mouse moved over a square.. In onmousemove I call invalidate so the square under mouse changes...
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