C / C++ / MFC

Re: Where can I input parameter in VC7 when I debugger?

15-Oct-05 1:49

Right click on the project in Solution Explorer, click on Properties. Expand the treeview on the left and go to Configuration Properties->Debugging. Click on it and you'll find a textbox for entering "Command Arguments".

Regards
Senthil
_____________________________
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chenxiujie15-Oct-05 2:07

chenxiujie

15-Oct-05 2:07

Thank you for your reply.

But in my program it doesn't work. I donn't know the reason.
if I run my program in command line as this: "XXXD.exe /Debug "
it run normally. But when I debug it in program,
I fill the debugging's Command :XXXD.exe, and fill the "Command Arguments": /Debug, but it run as : "XXXD.exe"
it seems the "Command Arguments" doesn't work , Perhaps there is
something I should to set ?

Re: Where can I input parameter in VC7 when I debugger?

Fired Fish15-Oct-05 2:19

Fired Fish

15-Oct-05 2:19

what program why not say the detail.

----------------------------
Jerry yu
Chinese
programming fans

how to create a DIB bitmap with a array

daojinliu15-Oct-05 0:53

daojinliu

15-Oct-05 0:53

int the function OnDraw()，I want to create a DIB bitmap using the array pData,but I am not successful，Please help me.
//the array containing color information
unsigned char* pData=new unsigned char[768*576];
int y=0, x=0;
for(;y<576;y++)
for(;x<768;x++)
{
pData[x*3+y*768*3]=0;
pData[x*3+1+y*768*3]=0;
pData[x*3+2+y*768*3]=255;
}
//information header

BITMAPINFOHEADER FrameBmi;
FrameBmi.biSize=sizeof(BITMAPINFOHEADER);
FrameBmi.biPlanes=1;
FrameBmi.biCompression=BI_RGB;
FrameBmi.biClrImportant=0;
FrameBmi.biSizeImage=768*576*3;
FrameBmi.biClrUsed=0;
FrameBmi.biBitCount=24;
FrameBmi.biWidth=768;
FrameBmi.biHeight=576;
FrameBmi.biXPelsPerMeter = 0;
FrameBmi.biYPelsPerMeter =0;
//file header
BITMAPFILEHEADER pf;
pf.bfType=0x4d42; //"BM"
pf.bfSize=sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)+sizeof(char[768*576]);
pf.bfOffBits=sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER);
pf.bfReserved1=0;
pf.bfReserved2=0;

//BITMAPINFOHEADER
LPBITMAPINFO lpbmi=(LPBITMAPINFO)GlobalAlloc(GMEM_FIXED,sizeof(BITMAPINFOHEADER));
ASSERT(lpbmi);
lpbmi->bmiHeader.biSize=FrameBmi.biSize;
lpbmi->bmiHeader.biPlanes=FrameBmi.biPlanes;
lpbmi->bmiHeader.biCompression=FrameBmi.biCompression;
lpbmi->bmiHeader.biClrImportant=FrameBmi.biClrImportant;
lpbmi->bmiHeader.biSizeImage=FrameBmi.biSizeImage;
lpbmi->bmiHeader.biClrUsed=FrameBmi.biClrUsed;
lpbmi->bmiHeader.biBitCount=FrameBmi.biBitCount;
lpbmi->bmiHeader.biWidth=FrameBmi.biWidth;
lpbmi->bmiHeader.biHeight=FrameBmi.biHeight;
lpbmi->bmiHeader.biXPelsPerMeter=FrameBmi.biXPelsPerMeter;
lpbmi->bmiHeader.biYPelsPerMeter=FrameBmi.biYPelsPerMeter;
lpbmi->bmiColors=NULL;

//创建DIB位图
CBitmap *OldBitmap;
HBITMAP bmp =::CreateDIBitmap((HDC)pDC,&FrameBmi,CBM_INIT,pData,lpbmi, DIB_RGB_COLORS);
ASSERT(bmp);
//
CBitmap bitmap;
bitmap.Attach(bmp);
CDC dcComp;
dcComp.CreateCompatibleDC(pDC);
OldBitmap=dcComp.SelectObject(&bitmap);
BITMAP bm;
bitmap.GetObject(sizeof(BITMAP),&bm);

// draw bitmap
pDC->BitBlt(0,0,768,576,&dcComp,0,0,SRCCOPY);
dcComp.SelectObject(OldBitmap);
delete [] pData;
GlobalFree(lpbmi);

help me!

protected, public and private

karmendra_js15-Oct-05 0:44

karmendra_js

15-Oct-05 0:44

I just got a lil confussed here.

I want to access a variable using the object of the class.

classXYZ objectname= new classXYZ();<br />
objectname.variablename=100;

so which access specifier is best for variablename.

Thanks.

Re: protected, public and private

S. Senthil Kumar15-Oct-05 0:51

Re: protected, public and private

15-Oct-05 0:51

If that code is outside classXYZ, you have no choice, it must be declared public.

Regards
Senthil

Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro

Gary R. Wheeler15-Oct-05 2:50

Gary R. Wheeler

15-Oct-05 2:50

public: Accessible outside the class.
protected: Accessible to instances of the class, and to any classes derived from it.
private: Accessible only by the class itself.

Software Zen: delete this;

Re: protected, public and private

ThatsAlok15-Oct-05 4:53

ThatsAlok

15-Oct-05 4:53

karmendra_js wrote:

I want to access a variable using the object of the class.

Accessing Class Variable outside class is not part of Good design.. always create Get and put function to access variable outside the class.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

Initial OnPaint

Trollslayer15-Oct-05 0:43

15-Oct-05 0:43

I am writing a dilaogue based application where a memory bitmap is created and the OnPaint method does a BitBlt to the dialogue.
I can get it to work by doing an initial BitBlt at the end of the OnCreateBmp() method but I would rather trigger OnPaint() so there is no duplicate code. Several attempts at invalidating the client area haven't worked.
Any suggestions?

Elaine Rose | [Rose]

OnCreateBmp()
{
    ...
    pDC = this->GetDC();					// Get Current DC
    m_MemBmp.CreateCompatibleBitmap(pDC,	// Create a bitmap
	m_ClientRect.Width(),
	m_ClientRect.Width());
    m_MemDC.SetTextColor(0xff00);
    m_MemDC.TextOutA(33, 33, "Hello world");
}

bmp1Dlg::OnPaint()
{
    ...
    pDC->BitBlt(m_ClientRect.left, m_ClientRect.top,
        m_ClientRect.Width(),m_ClientRect.Height() ,&m_MemDC,0,0,SRCCOPY);
    CDialog::OnPaint();
    ...
}

The tigress is here Big Grin | :-D

Prakash Nadar15-Oct-05 0:53

Prakash Nadar

15-Oct-05 0:53

call invalidaterect at then end of the OnCreateBmp

-prakash

Trollslayer15-Oct-05 0:59

15-Oct-05 0:59

That was my first attempt as the last line in OnCreateBitmap:
InvalidateRect(m_ClientRect, TRUE); but it makes no difference.

The tigress is here Big Grin | :-D

Prakash Nadar15-Oct-05 6:24

Prakash Nadar

15-Oct-05 6:24

try InvalidateRect(NULL, TRUE);

-prakash

S. Senthil Kumar15-Oct-05 1:02

15-Oct-05 1:02

From where does OnCreateBmp get called? Maybe it's called before GetClientRect can actually get the size of the client rectangle?

Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro

Trollslayer15-Oct-05 1:16

15-Oct-05 1:16

OnCreateBmp is a button event and m_ClientRect is set up within OnCreateBmp.
As I said if I put a copy of the BitBlt at the end of OnCreateBmp everything is fine, I am simply trying to get the OnPaint to happen and avoid duplicating code.

The tigress is here Big Grin | :-D

Tim Smith15-Oct-05 4:51

Tim Smith

15-Oct-05 4:51

Are you pumping your message queue? For the invalidate to work, the message queue must be pumped which will result in the delivery of the WM_PAINT message.

Tim Smith

I'm going to patent thought. I have yet to see any prior art.

Trollslayer15-Oct-05 4:58

15-Oct-05 4:58

This would explain what is happening, could you explain in a little more detail please?

Elaine Rose | [Rose]

The tigress is here Big Grin | :-D

Prakash Nadar15-Oct-05 6:22

Prakash Nadar

15-Oct-05 6:22

I guess InvalidateRect posts the wm_paint message and the message is pumped by the mfc framework.

-prakash

John R. Shaw16-Oct-05 16:48

John R. Shaw

16-Oct-05 16:48

Just curious, but what is being drawn in OnPaint()?

The problem is I see you creating a compaltible bitmap, but I do not see you selecting that bitmap into m_MemDC (before drawing to m_MemDC). If that is the case, then you are not drawing on the compatible bitmap. You would be drawing on the default bitmap which is monochrome, supporting black and white only.

INTP
Every thing is relative...

abstract base class

toxcct15-Oct-05 0:36

toxcct

15-Oct-05 0:36

hello everyone,

i have a simple inheritence question for anybody knows...

let's take an example. I have the following class definition :

class CVCalcParserException {
  protected:
    int         m_iExceptionNumber;
    std::string m_strExceptionMsg;
    int         m_iErrorPos;
 
  public:
    CVCalcParserException(int                iExceptionNumber,
                          const std::string& strExceptionMsg,
                          int                iErrorPos);
    virtual ~CVCalcParserException();
    int         GetExceptionNumber();
    std::string GetMessage();
    int         GetErrorPos();
};

In the current state of my class, people could be able to create an instance of it, but I'd like to forbbid this as CVCalcParserException.is supposed to provide some services to the derived classes.
How could i set this class abstract ? the getter functions are not to be overloaded so i cannot put them as pure virtual functions (using =0).

any idea ?

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Re: abstract base class

S. Senthil Kumar15-Oct-05 0:52