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AnswerRe: how to make a line in c++ Pin
enhzflep18-Jun-12 18:50
enhzflep18-Jun-12 18:50 
GeneralRe: how to make a line in c++ Pin
Member 913892419-Jun-12 0:43
Member 913892419-Jun-12 0:43 
GeneralRe: how to make a line in c++ Pin
enhzflep19-Jun-12 0:52
enhzflep19-Jun-12 0:52 
QuestionRe: how to make a line in c++ Pin
Member 913892419-Jun-12 17:45
Member 913892419-Jun-12 17:45 
AnswerMessage Removed Pin
19-Jun-12 17:49
enhzflep19-Jun-12 17:49 
GeneralRe: how to make a line in c++ Pin
Member 913892419-Jun-12 17:56
Member 913892419-Jun-12 17:56 
GeneralRe: how to make a line in c++ Pin
enhzflep19-Jun-12 18:00
enhzflep19-Jun-12 18:00 
GeneralRe: how to make a line in c++ Pin
enhzflep19-Jun-12 18:24
enhzflep19-Jun-12 18:24 
I asked you to provide the exact errors. You did not do so.
I will not help further.

This code will draw 2 lines in a window. You need to link to wingdi32.lib (wingdi32.a if using gcc)


C++
#include <windows.h>

/*  Declare Windows procedure  */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);

/*  Make the class name into a global variable  */
char szClassName[ ] = "CodeBlocksWindowsApp";

int WINAPI WinMain (HINSTANCE hThisInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR lpszArgument,
                     int nCmdShow)
{
    HWND hwnd;               /* This is the handle for our window */
    MSG messages;            /* Here messages to the application are saved */
    WNDCLASSEX wincl;        /* Data structure for the windowclass */

    /* The Window structure */
    wincl.hInstance = hThisInstance;
    wincl.lpszClassName = szClassName;
    wincl.lpfnWndProc = WindowProcedure;      /* This function is called by windows */
    wincl.style = CS_DBLCLKS;                 /* Catch double-clicks */
    wincl.cbSize = sizeof (WNDCLASSEX);

    /* Use default icon and mouse-pointer */
    wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
    wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
    wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
    wincl.lpszMenuName = NULL;                 /* No menu */
    wincl.cbClsExtra = 0;                      /* No extra bytes after the window class */
    wincl.cbWndExtra = 0;                      /* structure or the window instance */
    /* Use Windows's default colour as the background of the window */
    wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;

    /* Register the window class, and if it fails quit the program */
    if (!RegisterClassEx (&wincl))
        return 0;

    /* The class is registered, let's create the program*/
    hwnd = CreateWindowEx (
           0,                   /* Extended possibilites for variation */
           szClassName,         /* Classname */
           "Code::Blocks Template Windows App",       /* Title Text */
           WS_OVERLAPPEDWINDOW, /* default window */
           CW_USEDEFAULT,       /* Windows decides the position */
           CW_USEDEFAULT,       /* where the window ends up on the screen */
           544,                 /* The programs width */
           375,                 /* and height in pixels */
           HWND_DESKTOP,        /* The window is a child-window to desktop */
           NULL,                /* No menu */
           hThisInstance,       /* Program Instance handler */
           NULL                 /* No Window Creation data */
           );

    /* Make the window visible on the screen */
    ShowWindow (hwnd, nCmdShow);

    /* Run the message loop. It will run until GetMessage() returns 0 */
    while (GetMessage (&messages, NULL, 0, 0))
    {
        /* Translate virtual-key messages into character messages */
        TranslateMessage(&messages);
        /* Send message to WindowProcedure */
        DispatchMessage(&messages);
    }

    /* The program return-value is 0 - The value that PostQuitMessage() gave */
    return messages.wParam;
}


/*  This function is called by the Windows function DispatchMessage()  */

LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    HDC winHDC;
    switch (message)                  /* handle the messages */
    {
        case WM_DESTROY:
            PostQuitMessage (0);       /* send a WM_QUIT to the message queue */
            break;

        case WM_PAINT:
            winHDC = GetDC(hwnd);
            MoveToEx(winHDC, 0, 0, NULL);
            LineTo(winHDC, 100, 100);
            MoveToEx(winHDC, 0,100, NULL);
            LineTo(winHDC, 100, 0);
            ReleaseDC(hwnd, winHDC);
            return 0;

        default:                      /* for messages that we don't deal with */
            return DefWindowProc (hwnd, message, wParam, lParam);
    }

    return 0;
}


modified 20-Jun-12 5:20am.

AnswerRe: how to make a line in c++ Pin
enhzflep19-Jun-12 17:50
enhzflep19-Jun-12 17:50 
AnswerRe: how to make a line in c++ Pin
Albert Holguin19-Jun-12 2:33
professionalAlbert Holguin19-Jun-12 2:33 
QuestionCompiler Question: Use of MFC : Use Standard Windows Libraries Pin
DeepT18-Jun-12 10:57
DeepT18-Jun-12 10:57 
AnswerRe: Compiler Question: Use of MFC : Use Standard Windows Libraries Pin
Binu MD18-Jun-12 14:29
Binu MD18-Jun-12 14:29 
GeneralRe: Compiler Question: Use of MFC : Use Standard Windows Libraries Pin
DeepT19-Jun-12 2:24
DeepT19-Jun-12 2:24 
GeneralRe: Compiler Question: Use of MFC : Use Standard Windows Libraries Pin
Richard MacCutchan19-Jun-12 3:10
mveRichard MacCutchan19-Jun-12 3:10 
GeneralRe: Compiler Question: Use of MFC : Use Standard Windows Libraries Pin
DeepT19-Jun-12 3:24
DeepT19-Jun-12 3:24 
GeneralRe: Compiler Question: Use of MFC : Use Standard Windows Libraries Pin
Richard MacCutchan19-Jun-12 4:14
mveRichard MacCutchan19-Jun-12 4:14 
GeneralRe: Compiler Question: Use of MFC : Use Standard Windows Libraries Pin
DeepT19-Jun-12 4:20
DeepT19-Jun-12 4:20 
GeneralRe: Compiler Question: Use of MFC : Use Standard Windows Libraries Pin
Richard MacCutchan19-Jun-12 4:32
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QuestionDebugger issue Pin
Julio Cesar Nardelli Borges18-Jun-12 8:53
Julio Cesar Nardelli Borges18-Jun-12 8:53 
AnswerRe: Debugger issue Pin
Richard MacCutchan18-Jun-12 9:03
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AnswerRe: Debugger issue Pin
Rajesh R Subramanian18-Jun-12 19:03
professionalRajesh R Subramanian18-Jun-12 19:03 
QuestionDisabling External Dependencies in VS2010 Pin
AmbiguousName18-Jun-12 0:01
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AnswerRe: Disabling External Dependencies in VS2010 Pin
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AnswerRe: Disabling External Dependencies in VS2010 Pin
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AnswerRe: Disabling External Dependencies in VS2010 Pin
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