Comments by Santhosh G_ (Top 90 by date)

I think you can obtain the expected result by changing X,Y,Z value of the vertex.

"it works somehow but when i'm trying to change the perspective all the points just dissapear."
Why you need to change perspective ?

Are you getting some errors with this code?

Please post details inside b.drawCyborg() and DrawStars(). It is better to follow steps mentioned by enhzflep. Please avoid first glutSwapBuffer call from myDispkay and call it after all drawings[b.drawCyborg() and DrawStars()].

1) Call glClearColor and glClear first.
2) Call g.Draw and DrawStars next.
3) Finally, glutSwapBuffers

Please ensure the version of OpenGL.
CHAR* pVersion = (CHAR*)glGetString(GL_VERSION); Call this after wglMakeCurrent().

Sorry I could not find any errors in the code.

Please add code portion of Draw() or Onpaint, which draws the square.
And the code portion of rendering context initialisation.
You can add source code portion by selecting Improve Question link.

Please post your source code to identify the problem.

" I have one task to render some in openGl Offscreen", here i can understand that the image is in a framebuffer. Offscreen rendering can be performed with a frame buffer. We can access frame buffer with opengl extensions.
Here is a sample code and details of offscren rendering. http://www.songho.ca/opengl/gl_fbo.html

Above code will provide the contents of the clipboard as string.
Clipboard should contain entire file path.

If third party application need to run/start your script you have to provide your script as such.
If possible, Provide an application to third party, request them to run that application, and that application will prepare the script and execute the script.

Start script, and after that lock the file.
// Decript script from your application and write to D:\\script.js[an example]
ShellExecute(0, L"open", L"D:\\script.js", NULL, NULL, SW_SHOWNORMAL);
HANDLE hFile1 = CreateFile(_T("d:\\script.js"), GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL);
//Lock the first 1024 bytes
BOOL bLocked = LockFile(hFile1, 0, 0, 1024, 0);

After execution of script delete file from the path.

>> But if I Change the transparency value for stls points are not shown through it.
If alpha of stls set as 0.25, then what will the Alpha of lines. Is it1.0 ?

Which process consumes cpu ? Is it your process or any other nvidia driver supporting process like nvsc32.exe etc ?
We also faced a problem, sometimes cpu usage of my app is increased.
https://forums.geforce.com/default/topic/481759/nvoglnt-dll-33-drvcopycontext-take-a-sleep-/#3455522

>>> But when loading Rotation Function's it takes 50% of CPU Usage in my pc. But not in others PC.
What is the behavior without rotation code in shader ? Still CPU usage is 50% or decreased?

Please check the performance of the shader without the rotation in shader. I suspect this issue is not related to the rotation code. It might be something else, like old driver etc.

pix[0].setTexture(2001); // create texture
pix[1].setTexture(2022); // create texture

Why 2001 and 2022 is used ? Is it texture ID?
Please provide more information about RGBpixmap.

Please ensure glUseProgram called before calling glGetUniformLocation.

http://www.codeproject.com/Articles/89337/GLSL-Shader-for-Interpolating-Two-Textures
Implementation of simple shader to interpolate two textures with the input value from user. Please refer GLSLShader.cpp and GLSLShader.h.

Please ensure parameter name and the referenced name are same.

http://www.opengl.org/sdk/docs/man/xhtml/glGetUniformLocation.xml

This function returns -1 if name does not correspond to an active uniform variable in program, if name starts with the reserved prefix "gl_", or if name is associated with an atomic counter or a named uniform block.

Please ensure glUseProgram called before calling glGetUniformLocation.

http://www.codeproject.com/Articles/89337/GLSL-Shader-for-Interpolating-Two-Textures
Implementation of simple shader to interpolate two textures with the input value from user. Please refer GLSLShader.cpp and GLSLShader.h.

For getline, The delimiting character is the newline character ('\n'). If a pending '\n' in input stream,cin then getline immediately returns.
After cin>>x the '\n' is remained in the input stream.
http://www.cplusplus.com/reference/istream/istream/getline/

Please ensure required libraries for opencv is added in additional libraries.

Is it possible to create vector as a native type, say long.
Then convert IplImage* to long while inserting an IplImage* instance to the vector and
convert long to IplImage* while retrieving IplImage* from vector.

cliext::vector<<long>> Lineimgs;

Lineimgs.push_back((long) new IplImage);
IplImage* pTemp = (IplImage*)Lineimgs[nIndex];

Please ensure 'a' is presssed and not 'A'.
Try to debug in keypress or log key parameter from keypress function.
Above code should display a point on pressing 'a' in keyboard.

Is it possible to use shared memory or other inter process mechanism to share the address from "appname".

This link error indicates that certain functions import details are not available.
Please ensure glut32.lib exists, Is there any chance to have another version of glut in your linker path?. Please Check Additional lib folders, for the existance another glut.lib.
http://stackoverflow.com/questions/5159353/how-can-i-get-rid-of-the-imp-prefix-in-the-linker-in-vc

MonitorMediaSensorProc will remain until the following condition satisfies.
if(g_portio->m_bCloseMediaSensorThread || *pbCloseThread)
In my suggestion MonitorMediaSensorProc should not return until the all SendData() operation completed. Restarting the thread to send each command is not a good design.

If size is unknown, Use dynamic data structures like list or vector, and add each items as you needed.

But here you can allocate the array before for loop. Isn't it ?

Please provide code of method()

Do you want to change the file contents, by appending some data at the end of mapped file, right ?

Here one member down voted this answer. Please give a reason for the same, then I can correct the same.

Do you want to zoom controls in the dialog? Or do you need to zoom some bitmaps or image ?

What is the value cs.style. Please try to add WS_OVERLAPPED in the style.

Here i expected Cents is a class, cNancy is an instance of a Cents class.
When creating an instance of Cents cNancy with an existing instance cMark copy constructor will be called. Could you please explain the problem. Do I have to explain anything else.

Now what is the problem? i can see all stack items drawn in red color with yellow background. I just modified push() and pop() to draw the background color for every frame. The above code change will not push or pop items unconditionally. Could you please explain the problem.

Do you need to display the pushed char( new character) in different colored block, and all others in normal color( red) ?

copy glew32.lib from the lib path to visual studio lib path.
Download it from http://glew.sourceforge.net/install.html or any other web reosurce

To parse lines and strings from a character buffer, we can use stringstream. Is it possible to use stringstream ?

Please provide additional information about projection and viewport. If possible please provide enitre source code.

Please post the shader code, then we can identify the possible reason.
Compilers of some hardware venders are strict, I got different results on compiling same shader program in different machines. http://www.codeproject.com/Articles/89337/GLSL-Shader-for-Interpolating-Two-Textures#_comments

Try to use BYTE buffer to hold the vertex information.

"But on running the executable directly, the vertices are not rendered when the application was minimized or the focus was altered in some way." It means rendering is not happening after minimize, is it correct ?

What is the behavior while drawing with glBegin() glEnd() primitives.

Please add include files of CV3,CV2, and tFace.

The above example is similar to taking a picture of a ball by placing camera very near to the ball and placing camera very far from the ball. When camera is near to the ball, the viewing area will be small and it create ball as bigger. When camera is far from the ball, the viewing area will be bigger and the ball will become small.

Suppose you doubled the clipping area using glOrtho(). For 800,600 window size, you will call glOrtho( -266, 266, 200,200 ). The objects drawn in this Clipping area[in x direction -266 to 266, and in Y direction 200 to 200 ] is mapped to window region 800, 600. But the size of object[Square of size 25] is same as that of old. Here viewing area is increased, but the object size is same as that of small area. It creates a smaller size rectangle.

Please check this http://www.codeproject.com/Questions/127011/DLL-Shared-Memory-in-Windows-7

"C" is also tagged in the question. Anyway string::find() also an option to find the character in the string.

To display the bitmap in static window, you have to modify window style SS_BITMAP, and send STM_SETIMAGE message is required.
pStatic->ModifyStyle( 0, SS_BITMAP, SWP_SHOWWINDOW );
::SendMessage( pStatic->->m_hWnd, STM_SETIMAGE, (WPARAM)IMAGE_BITMAP, (LPARAM)m_bmp.m_hObject);

Which call gives access violation ?
I suspect (CStatic*)m_cTab1.GetDlgItem(6))

Use c_str() function of string.
strchar( strObj.c_str(), '&' );

MSDN link may help you.
I also faced this issue in my application, when converting VC6 app to VC7, controls style is not changed.
We got XP style controls, buttons, radio button, edit controls etc by applying above things.

Is it bucket sort algorithm implementation?
http://en.wikipedia.org/wiki/Bucket_sort

What is the implementation of makeResult() ?
Please attach to a debugger and find which function creates the access violation

// Message declaration.
const int SET_GUI_UPDATE_MESSAGE = WM_USER + 1 // User Mesasge

// message handler modification.

// Add message handler in message map.
ON_MESSAGE( SET_GUI_UPDATE_MESSAGE, OnGUIUpdateMessage )


// Message handler implementation.
void MyDlgClass::OnGUIUpdateMessage( WPARAM dwWParam_i, LPARAM dwLParam_i)
{
// Process GUI operation..
}

// Non-GUI thread, sending message to GUI thread after non gui operations.
UINT MyThread()
{
// Non gui operations

...

// Send message to GUI for GUI actions
ptrDlgHandle->PostMessage( SET_GUI_UPDATE_MESSAGE, 0,0 );
}

http://www.codeproject.com/Answers/474330/timerplusandplusthreadplusinplusmfcplusdoesplusnot#answer2
Here non gui actions are performed from a worker thread and after that send message to gui.

char cOutBuff[5][25]; // Buffer for 5 words.
char cInBuffer[250];
strcpy(cInBuffer,"AllPartsOfTheWord");
// Length of Words in an array
int nWordLengths[5] = {3,5,2,3,4};
int nOfset = 0;
for( int nI =0; nI<5;nI++)
{
// Copies part of a string.
memcpy(cOutBuff[nI], cInBuffer+nOfset, nWordLengths[nI]);
// Set Null at end of a string.
cOutBuff[nI][nWordLengths[nI]] = 0;

// Increment offset.
nOfset += nWordLengths[nI];
}

You can use memcpy with an offset for source parameter.

memcpy(buffn, actualstring +offset, ncurrentlength );
buffn is n th buffer, offset is the length of all strings from buff0 to buffn, ncurlength is the length of current string.

You have to parse the string to find "\n" and draw it in new line. If "\t" is in ini file, then you have to put 4 space for that and like that. Like that you have to consider all special characters for drawing.
Sorry for misunderstanding.

If possible, replace all combinations of before display.
Other option is to implement drawing of the string based on the special characters.

Please post the compiler error message. May be lineral() function is not declared in your header file.

Is there any calls to QueryPerformanceCounter in your code ?

ptrDlgHandle is the handle to the window. It can be declared in global scope, and assign m_hWnd to it from OnInitDialog().
Or you can use findwindow to get the GUI from the thread.

http://www.codeproject.com/Articles/3175/Displaying-Bitmap-with-Scrolling

This article might be helpful for you.

http://msdn.microsoft.com/en-us/library/windows/desktop/aa364957(v=vs.85).aspx
Please check Community Additions section, Details of using this API with VS 6.0 is explained. You have to use LoadLibrary to access this library,

For smooth move effect, you can use a timer to move between two points.
The movement in each timer interval should be small to prepare a smooth effect.

Please ensure SwapBuffer() called after all drawing.
If possible please provide code of OpenGL initialization and drawing code.

What about the sc_surf_data_14.gif,
What are the inputs to prepare these images ?
Do you have entire temperature distribution ?
Or temperature of one or two locations.

What are the inputs for your application ?
For GradientMap.gif, you need distribution of Temperature, right ?

After DoModal(), please call ReleaseMutex() and CloseHandle() to close the mutex instance.

Its not required to have the same name of Dialog name.
Any unique name to indicate your dialog. It should be unique. If anyone else opened a mutex with same name, your dialog will not appear.

Simply creating a CDialog instance will not give a valid window handle.
TestDlg* pDlg = new TestDlg();
HWND hNullHandle = pDlg->GetSafeHwnd(); // Handle will be NULL
pDlg->Create( IDD_DIALOG_ID, 0 );
HWND hValidaHandle = pDlg->GetSafeHwnd(); // Handle will be Valid
pDlg->ShowWindow( SW_SHOW );

If it is DoModal() to display the dialog, how you will get more than one dialog ?
Are you creating new process, or new thread to display new dialog ?

// The handle to be tested.
HWND hWindow = GetSafeHwnd();

// Check whether the window is still there.
BOOL bWindowAlive = IsWindow( hWindow );

What kind of data you will get from GDAL library ? Is it in any image format like RGB etc.

This may give some information realated to Ribbon control http://stackoverflow.com/questions/4592203/find-window-handle-of-a-ribbon-button

Please use spy++ tyo find the parent and ID of the control.

If the object is similar to quad, then you can map texture coordinates easily.
Please check these links,
http://www.nvidia.com/object/cube_map_ogl_tutorial.html
http://jerome.jouvie.free.fr/opengl-tutorials/Tutorial11.php

For mapping textures for an un-even structure or polygons, Split the shape into triangles. And provide texture coordinate for each vertex of the triangle.

strcpy(buf1313,szDate);
strcat(buf1313," ");
strcpy(buf1313,szTime);
after copying date, you are overwriting it with time.
strcpy(buf1313,szTime); use strcat instead of strcpy.

http://stackoverflow.com/questions/2166473/how-to-create-a-multicolumn-listbox

Please prepare vertex buffer with fX and fY values, and call it with glDrawArrays. Please try the following code..


int M_IN_DEGREE = 370;
int N_IN_DEGREE = 100;
int nCount = 1;
float stVertexArray[2*360];

stVertexArray[0] = 0.0;
stVertexArray[1] = 0.0;

for( int nR =N_IN_DEGREE; nR < M_IN_DEGREE; nR++ )
{
float fX = sin((float)nR * DEGREE_TO_RAD ) ;
float fY = cos((float)nR * DEGREE_TO_RAD );
stVertexArray[nCount*2] = fX;
stVertexArray[nCount*2 + 1] = fY;
nCount++;
}

glEnableClientState( GL_VERTEX_ARRAY );
glVertexPointer( 2, GL_FLOAT, 0, stVertexArray );
glDrawArrays( GL_LINE_LOOP, 0, nCount );

If issue is related to unwanted WM_PAINT message, then ValidateRect can solve.
What are the operations in your drawing ?
Is there any chance to consume much time for the processing ?

Thanks Richard, I corrected the answer.

This link will be helpful.

http://www.opengl.org/wiki/Getting_started

What is the size and format of texture?
If memory allocated is not enough for the texture size, there is a chance for access violation.

Is there any shaders enabled before calling drawShaft()?

Hope floor.enable(); will call glEnable( GL_TEXTURE_2D ); and floor.disable() will call glDisable( GL_TEXTURE_2D );.

Please confirm Texture class properly binds the expected texture.

How you are displaying image? Texture mappping may cause such isues.

Could you please post the code written in Idle function.