C / C++ / MFC

C#.net to C++ (simple code conversion) ?

8-May-07 13:45

toxcct wrote:
strange from microsoft that argv is not an array of const TCHAR*

Yeah. I guess it stays consistent with the old days of C Smile | :)

There's no const in any of the prototype variations.

Beats me!

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

Re: Main Arguments

ThatsAlok16-May-07 20:26

ThatsAlok

16-May-07 20:26

if you somehow graduate to windows programming you can use GetCommandline api to reterive the command line

"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
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Software_Specialist8-May-07 8:39

Software_Specialist

8-May-07 8:39

Hi all,

Can any one convert this simple piece of code from C#.NET to C++(general). I am getting error while performing this. I guess i am going wrong somewhere.

private String GetFileName(String filter){
OpenFileDialog dlg = new OpenFileDialog();
dlg.Multiselect = false;
if(filter.Length > 0){ dlg.Filter = filter; }

if( dlg.ShowDialog(this) != DialogResult.Cancel){
return dlg.FileName;
}else{
return null;
}
}

private void btnImageFile_Click(object sender, System.EventArgs e) {
String fileName = GetFileName("Bitmaps (*.bmp)|*.bmp|Tagged Image File Format(*.tif)|*.tif|PNG-24(*.png)|*.png");
if(fileName != null){
txtImageFile.Text = fileName;
SetImage(fileName);
}

Thanks a lot

Hamid_RT8-May-07 9:02

Hamid_RT

8-May-07 9:02

Do you want to show a dialog to user for select an image file(not multiselect because its false on your code) and draw it? You can write this code with CFileDialog

WhiteSky

Software_Specialist8-May-07 9:09

Software_Specialist

8-May-07 9:09

okay
well i can open a dialog box and select file by

OpenPictureDialog1->Title= "Open File: ";
if (OpenPictureDialog1->Execute())
bmpFileEdit->Text=OpenPictureDialog1->FileName;
return;

But i want that it should not select any file other than .bmp, .tif and .png.
So you mean i can do this via CFileDialog. Okay ill look for it, if i get any clue how to do it with this.

Thanks

Hamid_RT8-May-07 9:21

Hamid_RT

8-May-07 9:21

I dont have any compiler now(but I have 3dmax program now Wink | ;)

) but try to compile this code and see what happens?(it shows only txt files

CFileDialog m_Open_Dialog(1,0,0,OFN_EXPLORER ,"Text Files (*.txt)|*.txt||",0);

and also instead use of

//if( dlg.ShowDialog(this) != DialogResult.Cancel)

use of

if(m_Open_Dialog.DoModal() == IDOK)

-----------------------------------------------
It seems previous code show a dialog to user to select image files and show filename on the a labeltext maybe and send filename to a function.

WhiteSky

Mark Salsbery8-May-07 9:22

8-May-07 9:22

Something like this maybe (I've used no MFC and no STL/MFC/ATL string classes)...

bool GetFileName(LPTSTR pszBuffer, DWORD dwBufferSize, LPCTSTR pszFilter)
{
   OPENFILENAME ofn;
   memset(&ofn, 0, sizeof(OPENFILENAME));
   ofn.lStructSize = sizeof(OPENFILENAME);
   ofn.lpstrFilter = pszFilter;
   ofn.lpstrFile = pszBuffer;
   ofn.nMaxFile = dwBufferSize;
   // Remove the following flag for a non-explorer-style dialog
   //  and/or adjust flags for desired functionality (see OPENFILENAME struct in SDK)
   ofn.Flags = OFN_EXPLORER;
   // Add the following flag to hide the "places bar"
   //ofn.FlagsEx = OFN_EX_NOPLACESBAR;
 
   return 0 != ::GetOpenFileName(&ofn);
}
 
...
 
   TCHAR szFileName[MAX_PATH] = _T("");
 
   if (GetFileName(szFileName, MAX_PATH, _T("Bitmaps (*.bmp)\0*.bmp\0Tagged Image File Format(*.tif)\0*.tif\0PNG-24(*.png)\0*.png\0\0")))
   {
      // szFileName contains the pathname to the selected file
      // Do something with it here
   }
   else
   {
      // User cancelled dialog
   }

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

Software_Specialist8-May-07 10:09

Software_Specialist

8-May-07 10:09

Hi thanks a lot
But i think simple use of filter could solve this out. Well what i did now is

<br />
OpenPictureDialog1->Title= "Open File: ";<br />
OpenPictureDialog1->Filter = "Bitmap files (*.bmp)|*.BMP";<br />
if (OpenPictureDialog1->Execute())<br />
bmpFileEdit->Text=OpenPictureDialog1->FileName;<br />
return;

So this gives me only bitmap file to select. So its fine the only thing now left is function
SetImage(fileName) function i.e.

<br />
private void SetImage(String fileName){<br />
picImage.Image = new Bitmap(fileName);<br />
<br />
btnHide.Enabled = btnExtract.Enabled = true;<br />
btnSaveBitmap.Enabled = false;<br />
			<br />
int index = fileName.LastIndexOf("\\")+1;<br />
if(index > 0){ fileName = fileName.Substring(index); }<br />
grpPicture.Text = "Carrier Bitmap ("+fileName+")";<br />
}

Ill try to convert this aswell. Well and yeh i said General C++ i meant no VC++. As i am using Borland. So it doesnt support the option you gave.

Can any one give me any tips as i have got this VC++ pure win32 application and C#.net application n i want to convert it to General Borland C++. I know i have to do it manually but still any good pts i should follow.

Thanks a lot for your time...
SS

Mark Salsbery8-May-07 10:37

8-May-07 10:37

What part didn't compile on Borland? You should be able to use Windows APIs - that's what .NET
is using under the hood. You may need to include the appropriate header files and link libraries.

For non-Unicode builds you can eliminate the "_T()" macros I used. Replace "LPCTSTR" with "const
char *", "LPSTR" with "char *", "TCHAR" with "char".

For the second part, what needs to happen? Do you load the image as a GDI+ Bitmap object?
Then format the file name into a string?

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

cancel dialog

deeps_cute8-May-07 7:52

deeps_cute

8-May-07 7:52

hi i have to cancel(close) the dilaog from a user defined function. how to do this?

Arise Awake Stop Not Till ur Goal is Reached.

Cedric Moonen8-May-07 7:53

Cedric Moonen

8-May-07 7:53

Simply call OnCancel from your function.

Cédric Moonen
Software developer

Charting control [v1.2]

deeps_cute8-May-07 7:58

deeps_cute

8-May-07 7:58

hmm i tried that but got crash sinc hwnd is null

Arise Awake Stop Not Till ur Goal is Reached.

David Crow8-May-07 8:11

David Crow

8-May-07 8:11

Where and how are you calling OnCancel()?

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Hamid_RT8-May-07 8:52

Hamid_RT

8-May-07 8:52

Can you show code snippet?

WhiteSky

KellyR8-May-07 10:56

KellyR

8-May-07 10:56

You could manually send a WM_CLOSE message to your dialog handle.

For instance if the handle to your dialog is:

HWND MyDialog;

SendMessage(MyDialog, WM_CLOSE, 0, 0);

CDialog with CToolbar

Andy H8-May-07 6:09

Andy H

8-May-07 6:09

I have a CDialog on which I have a extension CToolbar ctrl. I have extended the CTOolbar so that I can use OnKickIdle from my CDialog to get the ON_UPDATE_COMMAND_UI for my CToolbar buttons.

My question is this: How can I capture the tab key to also tab through the CToolbar buttons and also tab through the CDialog menu's?

Hans Dietrich8-May-07 6:54

Hans Dietrich

8-May-07 6:54

What does your OnKickIdle() look like? I have used this kind of code:

LRESULT CMyDTestDlg::OnKickIdle(WPARAM wParam, LPARAM lParam)
{
    UpdateDialogControls(this, FALSE);
    AfxCallWndProc(this, m_hWnd, WM_IDLEUPDATECMDUI, TRUE, 0);
    SendMessageToDescendants(WM_IDLEUPDATECMDUI, TRUE, 0, TRUE, TRUE);
    return 0;
}

Best wishes,
Hans

Andy H8-May-07 7:37

Andy H

8-May-07 7:37

My code looks like this:

LRESULT CCTSubmiterDlg::OnKickIdle( WPARAM wParam, LPARAM lParam )<br />
{<br />
	SendMessageToDescendants( WM_IDLEUPDATECMDUI, wParam, lParam, TRUE, TRUE );<br />
<br />
	//	Capture the update messages for the menu:<br />
	CMenu* pMainMenu = GetMenu();<br />
	CCmdUI cmdUI;<br />
<br />
	for (UINT n = 0; n < pMainMenu->GetMenuItemCount(); ++n)<br />
	{<br />
		CMenu* pSubMenu = pMainMenu->GetSubMenu(n);<br />
		cmdUI.m_nIndexMax = pSubMenu->GetMenuItemCount();<br />
<br />
		for (UINT i = 0; i < cmdUI.m_nIndexMax;++i)<br />
		{<br />
			cmdUI.m_nIndex = i;<br />
			cmdUI.m_nID = pSubMenu->GetMenuItemID(i);<br />
			cmdUI.m_pMenu = pSubMenu;<br />
			cmdUI.DoUpdate( this, FALSE );<br />
		}<br />
	}<br />
<br />
	return 0;<br />
}

Mark Salsbery8-May-07 8:32

8-May-07 8:32

Andy H wrote:
My question is this: How can I capture the tab key to also tab through the CToolbar buttons and also tab through the CDialog menu's?

AFAIK, there's no tab-through-buttons functionality in a toolbar (or am I wrong?).

Do you have a way to implement that functionality?

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder