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Reseource Problem with multiple charts when Importing.


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Good morning Frank! 

I have a important problem for you. I have an application that opens up to

16 charts (which I create dynamically using VC6.0 and the dll). The problem

is that the charts cause a massive resource hit (40+% for 25 charts, 30% for

16 charts, 16% for 8 charts) when I import them. This causes my User's

computer to crash if they have almost anything else open. I tracked down

the problem to the actually import statement from the chart fx object- Ie.

if I import the chart from a file, its hits my resources hard, if I dont

import it- no major resource hit (it tends to reduce the hit to 2-3%). This

is even if I edit the chart to look like an imported chart- it doesnt hit

the resources until I load it from a file.

Any solutions to this problem would be very appreciated.

Here is the main code for this problem:

hfile = CreateFile(m_filename, GENERIC_READ, 0, NULL, OPEN_EXISTING,

FILE_ATTRIBUTE_NORMAL, NULL);

if (hfile != INVALID_HANDLE_VALUE)

{

GetWindowRect(rc);

ScreenToClient(rc);

long l = GetWindowLong(m_hWnd, GWL_WNDPROC);

int ID = IDC_CHARTPLOT1 + 1;

int i = 0;

for (i = 0; i < MAX_PLOTS_PER_PAGE; i++)

{ // for each chart, create a m_pChartFX

if (SUCCEEDED(hr = CoGetClassObject(__uuidof(ChartFX),

CLSCTX_INPROC_SERVER,

NULL, IID_IClassFactory2, (LPVOID FAR *) &pFactory2)))

hr = pFactory2->CreateInstanceLic

(NULL, NULL, IID_IUnknown, license, (LPVOID FAR *) &pUnk);

if (SUCCEEDED(hr))

{

m_pChartFX[i] = pUnk;

pUnk->Release();

}

else

{

MessageBox("Createinstancelicense failed");

}

}

m_pChartFX[i].Release();

m_pChartFX[i].CreateInstance(__uuidof(ChartFX));

m_pChartFX[i]->OpenDataEx((CfxCod) (COD_XVALUES), 1, COD_UNKNOWN);

m_pChartFX[i]->OpenDataEx((CfxCod) (COD_VALUES), 1,COD_UNKNOWN);

m_pChartFX[i]->ValueEx[0][0] = 0;

m_pChartFX[i]->XValueEx[0][0] = 0;

m_pChartFX[i]->CloseData((CfxCod) (COD_XVALUES | COD_SMOOTH));

m_pChartFX[i]->CloseData((CfxCod) (COD_VALUES | COD_SMOOTH));

m_pChartFX[i]->FileMask = (CfxFileMask)

( FMASK_COLORS | FMASK_ELEMENTS | FMASK_EXTENSIONS | FMASK_FONTS

| FMASK_GENERAL | FMASK_LABELS | FMASK_MULTI | FMASK_PRINTERINFO

| FMASK_SCALE | FMASK_TITLES);

for (i = 0; i < MAX_PLOTS_PER_PAGE; i++)

{ // for each chart, create a m_pChartFX

m_pChartFX[i]->CreateWnd((long)this->m_hWnd, (ID + i),

rc.left, rc.top, rc.right, rc.left,

WS_CHILD | WS_THICKFRAME);

m_hwndChartFX[i] = (HWND)m_pChartFX[i]->hWnd;

pFactory2->Release();

::ShowWindow(m_hwndChartFX[i], SW_SHOW);

// here is the problem code - each time this next line is called, i lose

2-3% of resources....

m_pChartFX[i]->Import(CHART_CFXFILE, (long)hfile);

Sleep(0);

}

l = GetWindowLong(m_hWnd, GWL_WNDPROC);

CloseHandle(hfile);

}

Thanks in advance...

--

Josh Eanes

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