C / C++ / MFC Discussion Boards

Hi!
My Bitmap-Procedure works now without any problems! Thanks
to those who helped me to fix it!!
But there is still no Bitmap on my screen when I start my ShowMyBitmap procedure.
Here is the code:
P.S:Calling my procedures by a a Button which is in the same window as the Bitmap. Is this the mistake?
P.P.S: Using VC++6

-------------------------

void CLastPicDlg::LoadmyPic()
{

m_sFileName = "pic01.bmp";

HBITMAP hBitmap = (HBITMAP)::LoadImage(AfxGetInstanceHandle(),
m_sFileName, IMAGE_BITMAP, 0, 0,
LR_LOADFROMFILE | LR_CREATEDIBSECTION);

m_bmpBitmap.Attach(hBitmap);
MessageBox("Loading:" + m_sFileName, "Loading File");
}

void CLastPicDlg::ShowmyPic(CPaintDC *clientDC)
{

CDC temp;

temp.CreateCompatibleDC(clientDC);
CBitmap* pOldBitmap = (CBitmap*)temp.SelectObject(m_bmpBitmap);
CRect lRect;
GetClientRect(lRect);
lRect.NormalizeRect();
clientDC->StretchBlt(10, 10, (lRect.Width() - 20), (lRect.Height()- 20), &temp, 320, 200, 0, 0, SRCCOPY);

}

void CLastPicDlg::OnLoadbut()
{

LoadmyPic();
}

void CLastPicDlg::OnShowbut()
{

CPaintDC clientDC(this);
ShowmyPic(&clientDC);

}

You're trying to flip the bitmap ? If not, why are the co-ordinates of the source bitmap reversed ?

I'd suggest doing this:

BITMAP bm;
m_bmpBitmap.GetBitmap(&bm);

then when you stretchblt you can use bm.bmWidth and bm.bmHeight instead of hard coded values.

I'd also check the hBitmap for NULL to make sure it is OK, and check the BOOL return from StretchBlt in order to narrow down your problem, but I'm a little nervous about your source co-ordinates - change them to 0,0,bm.bmWidth,bm.bmHeight and then experiment. I remember the flipping of images being a little different to what the MSDN saya but I don't recall the details, so I'd get it showing first, then try to flip it. I think you're grabbing 0 pixels across and down starting from 320, 200.

Christian

The content of this post is not necessarily the opinion of my yadda yadda yadda.

To understand recursion, we must first understand recursion.

Greetings Programs,

I've hit an interesting error when using threads and timers in my latest project. If I execute a new thread from one class calling a function of another class like so:

_beginthread(pPointer->IInitializeMonitor, 0, NULL);

I recieve the following error:
Y:\smtpmon\smtpmon.cpp(364) : error C2664: '_beginthread' : cannot convert parameter 1 from 'void (void)' to 'void (__cdecl *)(void *)'

Similarly, if I call a Timer Callback function from within it's own class, such as:

bSuccess = SetWaitableTimer(
hTimer, // Handle to the timer object.
&liDueTime, // When timer will become signaled.
m_iInterval*1000, // Periodic timer interval of X seconds.
TimerAPCProc, // Completion routine.
NULL,
FALSE ); // Do not restore a suspended system.
I recieve the following error:
Y:\smtpmon\smtpcom.cpp(57) : error C2664: 'SetWaitableTimer' : cannot convert parameter 4 from 'void (void *,unsigned long,unsigned long)' to 'void (__stdcall *)(void *,unsigned long,unsigned long)'

I'm sure that I'm missing something simple, but I just can't figure out what it is. Any help would be greatly appreciated.

Rhoam

yes, it's simple:
C != C++

you can only use plain C functions (or static C++ member functions) as the callback or thread proc.

-c

------------------------------
Smaller Animals Software, Inc.
http://www.smalleranimals.com

http://www.parashift.com/c++-faq-lite/pointers-to-members.html#[30.1]

it is somebody ho know more about gantt in vc++?

bogdan

I don't have *any* experience with this product, but I was aware of its existance. You might want to check it out:

http://www.addsoft.com/GanttOCX/GanttOCX.htm

HTH,

David

Does anyone have an idea, how can I export a bitmap to an RTF file? Please Help

manos

hi!

Why doesn't it work?
VC++6 reports that it can't convert the 5th parametre
of StretchBlt

-------------------------------

void CLastPicDlg::LoadmyPic()
{

m_sFileName = "pic01.bmp";

HBITMAP hBitmap = (HBITMAP)::LoadImage(AfxGetInstanceHandle(),
m_sFileName, IMAGE_BITMAP, 0, 0,
LR_LOADFROMFILE | LR_CREATEDIBSECTION);

m_bmpBitmap.Attach(hBitmap);
}

void CLastPicDlg::ShowmyPic(CPaintDC *clientDC)
{

CDC temp;

temp.CreateCompatibleDC(clientDC);
temp.SelectObject(m_bmpBitmap);
CRect lRect;
GetClientRect(lRect);
lRect.NormalizeRect();
clientDC->StretchBlt(10, 10, (lRect.Width() - 20), (lRect.Height()- 20), temp, 0, 0, 320, 200, SRCCOPY);

}

You are getting this error because the StretchBlt is expecting a pointer to the temporary DC, this will work:

clientDC->StretchBlt(10, 10, (lRect.Width() - 20), (lRect.Height()- 20), &temp, 0, 0, 320, 200, SRCCOPY

StretcBlt takes a CDC Pointer. Try this:

clientDC->StretchBlt(10, 10, (lRect.Width() - 20), (lRect.Height()- 20), &temp, 0, 0, 320, 200, SRCCOPY);

Thanks

I need to make a software which partitions hard disk efficiently. I need to know if WinAPIs are available for the purpose.
Confused | :confused:

Ammar

I want all my mdi childframes to be maximized so the view fills the window like an SDI app, how do I make the childwindow maximized, how do I make it non-user sizeable afterwards and how do I remove min/max buttons from the app menubar?

thanx in advance.

If you want to make your frame window non-sizeable and remove max button do it like this
in your PreCreateWindow function of child frame add these two lines

BOOL CMyFrame::PreCreateWindow(CREATESTRUCT& cs)
{
//These are the two lines
cs.style = cs.style & ~ WS_THICKFRAME; //remove resizing
cs.style = cs.style & ~ WS_MAXIMIZEBOX;//remove max button

if( !CMDIChildWnd::PreCreateWindow(cs) )
return FALSE;

return TRUE;

}

Unfortunately I do not know how to make it fill the window Smile | :)

Hope this helps,
Orcun Colak

http://www.geocities.com/ton_soft

Hi;

My first post... silly and simple questions, but i've poured through MS Disaster Network (MSDN) and
Wrox "Professional MFC 6.0", and can't find answers to easy questions. I've done these in the past, but it's been so long that i've forgotten how.

First, how in the blink do you add a custom app icon (upper left corner icon)? I modified the stock Wizard supplied icon (the building blocks one) and yet, the app doesn't use it! It's in the project and the IDR_MAINFRAME rc is pointing at the correct file but... argh!

Secondly, I need to intercept both the minimize button on the right of the title bar and also the minimise menu item on the system menu so that when the user clicks on those, I can minimize to the tray instead of the task bar - client requirement (and i'd like to know how to do it myself!). I already have a menu item for minimize to tray (on the view menu), but need it this way too.

TIA!

Dave LeBlanc

For custom Icon, in your dialog constructor, add

// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDI_MYICON);

There may be other ways but this is what the wizard gives me and it works when I am using MFC.

Have Fun!

G'day Dave,

Re: The icon problem. Have you edited the 32x32 pixel icon and forgotten to do the 16x16 version? Been there, done that... Smile | :)

There's a drop list just above the icon editing window to let you select the size of icon to work on.

Sorry, I cant help with the minimizing problem, but there's a CP article here that might set you straight.

Hope this helps.

Steve

Take a loot at this article:
http://www.codeproject.com/gdi/replaceicon.asp

Enjoy!
Cool | :cool:

You need a handler for WM_SYSCOMMAND message. Maybe something like this:

void CMainFrame::OnSysCommand(UINT nID, LPARAM lParam)
{
	CFrameWnd::OnSysCommand(nID, lParam);
	
	if (nID == SC_MINIMIZE)
	{
		// Do your stuff here
		// like maybe call ShowWindow(SW_HIDE)
		// or something?
	}
}

Don't forget to add ON_WM_SYSCOMMAND() to the message map Smile | :)

.

HTH, peter

Hi;

My first post... silly and simple questions, but i've poured through MS Disaster Network (MSDN) and
Wrox "Professional MFC 6.0", and can't find answers to easy questions. I've done these in the past, but it's been so long that i've forgotten how.

First, how in the blink do you add a custom app icon (upper left corner icon)? I modified the stock Wizard supplied icon (the building blocks one) and yet, the app doesn't use it! It's in the project and the IDR_MAINFRAME rc is pointing at the correct file but... argh!

Secondly, I need to intercept both the minimize button on the right of the title bar and also the minimise menu item on the system menu so that when the user clicks on those, I can minimize to the tray instead of the task bar - client requirement (and i'd like to know how to do it myself!). I already have a menu item for minimize to tray (on the view menu), but need it this way too.

TIA!

Dave LeBlanc

Hi every body,

CListCtrl in Visual c++ 6.0

I have a list view ( list control) with three columns and three lines and i want to navigate in my control like this :

for (i=0; i

I'm surprised no-one answered this already - I had to wait to get home and look at code where I did it.

I'm using SetItemText to put them in, but GetItemText takes them back out the same way:

// Create list view columns
LV_COLUMN listColumn;
LV_ITEM listItem;
char* arColumns[2] = { "Account", "Password"};
listColumn.mask = LVCF_FMT|LVCF_WIDTH|LVCF_TEXT|LVCF_SUBITEM;
listColumn.fmt = LVCFMT_LEFT;
int Width[2]={190,63};
listColumn.cx = 180;
for ( int nColumn = 0;nColumn<2;nColumn++)
{
listColumn.cx = Width[nColumn];
listColumn.iSubItem = nColumn;
listColumn.pszText = arColumns[nColumn];
m_listCtrl.InsertColumn(nColumn,&listColumn);
}

// Add list items

listItem.mask = LVIF_TEXT | LVIF_IMAGE;
listItem.iSubItem = 0;

TCWACCOUNT* pCurrent;
pCurrent = m_TCWACCOUNT.pNext;
int nItem = 0;
while(pCurrent != NULL)
{
listItem.iItem = nItem;
listItem.pszText = pCurrent->pCustName;
CString Check = (CString)pCurrent->pPasswd;
if (Check.Left(4) == "NuLl")
{
listItem.iImage = 1;
m_listCtrl.InsertItem (&listItem);
m_listCtrl.SetItemText (nItem, 1, "No");
}
else
{
listItem.iImage = 0;
m_listCtrl.InsertItem (&listItem);
m_listCtrl.SetItemText (nItem, 1, "Yes");
}
pCurrent = pCurrent->pNext;
nItem++;

}

Ignore all the account stuff, it's just stepping through a linked list. The important part is that the item is the row, the sub item is the column. GetItemText looks like this in the MSDN:

int GetItemText( int nItem, int nSubItem, LPTSTR lpszText, int nLen ) const;

CString GetItemText( int nItem, int nSubItem ) const;

So you can do this

for (int i = 0; i < listsize; i++)
{

Column1[i] = m_List.GetItemText(i, 0);
Column2[i] = m_List.GetItemText(i, 1);
Column3[i] = m_List.GetItemText(i, 2);
}

Of course, you'd be better putting them in a struct ( or class ) but that is another story....

Christian

The content of this post is not necessarily the opinion of my yadda yadda yadda.

To understand recursion, we must first understand recursion.

lets say I got a listctrl with items from A-Z
and i want to walk up/down left/right the lista with more then the arrow keys
like 'A' and 'D' (left/right). but the problem is that as soon as a press 'D' the selections
jumps to the items that begin with 'D' and with 'A' i get to the item starting with A,
this is often a very good thing.. but I dont want it..
i Tried to catch the message in the OnKeyDown and there move the selection up/down but the
autoselection feature is activated later on.. how do i disable / override it Confused | :confused:

??

Mathias S.
mathias@isalive.com

Hi
In the developer edition of Office 2000 its says it includes the "Royalty free runtime distribution libraries for Access2000". If I use a Access database in my app. does this mean I need these libraries to run the software on applications that don't have Access2000? If not, what is it?

Thanks