how to commucation c sharp and win32 library?

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my purpose is to change win32 application to win32 libray,and use c# application to invoke win32 libray.
but there some questions that occurs.

the win32 application's problem write as below:

C++

int WINAPI WinMain(HINSTANCE	hInstance,			// current form instance
	           HINSTANCE	hPrevInstance,		// pre form instance
		   LPSTR		lpCmdLine,			// parameters command
		   int			nCmdShow)			// show the form states
{
    step 1: create main form use api function.
    step 2: create while to catch windows message
            
    while(!done)									
    {
		if (PeekMessage(&msg,NULL,0,0,PM_REMOVE))	// is there have message to wait?
		{
			if (msg.message==WM_QUIT)				
				done=TRUE;			// yes, receive the quit message
			else									// no
			{
				TranslateMessage(&msg);				
				DispatchMessage(&msg);				
			}
		}
     }
}

C++

LRESULT CALLBACK WndProc(HWND	hWnd,			// current form's instance
			 UINT	uMsg,			// windows message
			 WPARAM	wParam,			
			LPARAM	lParam)			
{

        switch (uMsg)	//check message							
	{
              if(LOWORD(wParam)==1001)
	      {
				CreateDialog(hInstanceTemp, MAKEINTRESOURCE(IDD_2001), hWnd, (DLGPROC)MainuDlgProc1);
				EnableWindow(GetDlgItem(hWnd,1001),FALSE);
	       }
         }
}

C++

BOOL WINAPI MainuDlgProc1(HWND u_Dlg, UINT u_Msg, WPARAM w_Param, LPARAM l_Param)
{
	switch(u_Msg)
	{
		case WM_INITDIALOG:
			if(Dlg01==1)
				EnableWindow(GetDlgItem(u_Dlg,IDC_BUTTON1),FALSE);
			else if(Dlg01==2)
				EnableWindow(GetDlgItem(u_Dlg,IDC_BUTTON2),FALSE);
			else if(Dlg01==3)
				EnableWindow(GetDlgItem(u_Dlg,IDC_BUTTON3),FALSE);
			else if(Dlg01==4)
				EnableWindow(GetDlgItem(u_Dlg,IDC_BUTTON4),FALSE);
			else if(Dlg01==5)
				EnableWindow(GetDlgItem(u_Dlg,IDC_BUTTON5),FALSE);
			else if(Dlg01==6)
				EnableWindow(GetDlgItem(u_Dlg,IDC_BUTTON6),FALSE);
			else if(Dlg01==7)
				EnableWindow(GetDlgItem(u_Dlg,IDC_BUTTON7),FALSE);
			else if(Dlg01==8)
				EnableWindow(GetDlgItem(u_Dlg,IDC_BUTTON8),FALSE);

			char Dlg_name[30];
			sprintf(Dlg_name,"%d",fishq[0].q10);
			SetDlgItemText(u_Dlg,IDC_EDIT1,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[0].q11);
			SetDlgItemText(u_Dlg,IDC_EDIT2,Dlg_name);
			sprintf(Dlg_name,"%d",fishq[0].q19);
			SetDlgItemText(u_Dlg,IDC_EDIT3,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[0].q12);
			SetDlgItemText(u_Dlg,IDC_EDIT4,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[0].q13*10000.0);
			SetDlgItemText(u_Dlg,IDC_EDIT5,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[0].q15*10000.0);
			SetDlgItemText(u_Dlg,IDC_EDIT7,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[0].q16);
			SetDlgItemText(u_Dlg,IDC_EDIT8,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[0].q17);
			SetDlgItemText(u_Dlg,IDC_EDIT9,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[0].q20);
			SetDlgItemText(u_Dlg,IDC_EDIT10,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[0].q22);
			SetDlgItemText(u_Dlg,IDC_EDIT11,Dlg_name);
			sprintf(Dlg_name,"%d",fishm2.tt);
			SetDlgItemText(u_Dlg,IDC_EDIT12,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[1].q52);
			SetDlgItemText(u_Dlg,IDC_EDIT13,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[2].q52);
			SetDlgItemText(u_Dlg,IDC_EDIT14,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[3].q52);
			SetDlgItemText(u_Dlg,IDC_EDIT15,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[4].q52);
			SetDlgItemText(u_Dlg,IDC_EDIT16,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[5].q52);
			SetDlgItemText(u_Dlg,IDC_EDIT17,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[6].q52);
			SetDlgItemText(u_Dlg,IDC_EDIT18,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[7].q52);
			SetDlgItemText(u_Dlg,IDC_EDIT19,Dlg_name);
			sprintf(Dlg_name,"%i",fish_o2);
			SetDlgItemText(u_Dlg,IDC_EDIT20,Dlg_name);
			if(fishq[0].q1 & (1UL<< 4))  CheckRadioButton(u_Dlg,IDC_RADIO5,IDC_RADIO6,IDC_RADIO5);
			else   CheckRadioButton(u_Dlg,IDC_RADIO5,IDC_RADIO6,IDC_RADIO6);
			if(fishq[0].q1 & (1UL<< 3))  CheckRadioButton(u_Dlg,IDC_RADIO7,IDC_RADIO8,IDC_RADIO7);
			else   CheckRadioButton(u_Dlg,IDC_RADIO7,IDC_RADIO8,IDC_RADIO8);
			if(fishq[0].q1 & (1UL<< 2))  CheckRadioButton(u_Dlg,IDC_RADIO9,IDC_RADIO10,IDC_RADIO9);
			else   CheckRadioButton(u_Dlg,IDC_RADIO9,IDC_RADIO10,IDC_RADIO10);
			if(fishq[0].q1 & (1UL<< 1))  CheckRadioButton(u_Dlg,IDC_RADIO11,IDC_RADIO12,IDC_RADIO11);
			else   CheckRadioButton(u_Dlg,IDC_RADIO11,IDC_RADIO12,IDC_RADIO12);
			if(fishq[0].q1 & (1UL<< 0))  CheckRadioButton(u_Dlg,IDC_RADIO13,IDC_RADIO14,IDC_RADIO13);
			else   CheckRadioButton(u_Dlg,IDC_RADIO13,IDC_RADIO14,IDC_RADIO14);

			sprintf(Dlg_name,"%c",fishq[Dlg01].q1);
			SetDlgItemText(u_Dlg,IDC_EDIT30,Dlg_name);
			sprintf(Dlg_name,"%d",fishq[Dlg01].q2);
			SetDlgItemText(u_Dlg,IDC_EDIT31,Dlg_name);
			sprintf(Dlg_name,"%d",fishq[Dlg01].q3);
			SetDlgItemText(u_Dlg,IDC_EDIT32,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[Dlg01].q4);
			SetDlgItemText(u_Dlg,IDC_EDIT33,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[Dlg01].q5);
			SetDlgItemText(u_Dlg,IDC_EDIT34,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[Dlg01].q6);
			SetDlgItemText(u_Dlg,IDC_EDIT35,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[Dlg01].q7);
			SetDlgItemText(u_Dlg,IDC_EDIT36,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[Dlg01].q8);
			SetDlgItemText(u_Dlg,IDC_EDIT37,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[Dlg01].q9);
			SetDlgItemText(u_Dlg,IDC_EDIT38,Dlg_name);
			sprintf(Dlg_name,"%d",fishq[Dlg01].q10);
			SetDlgItemText(u_Dlg,IDC_EDIT39,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[Dlg01].q11);
			SetDlgItemText(u_Dlg,IDC_EDIT40,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[Dlg01].q12);
			SetDlgItemText(u_Dlg,IDC_EDIT41,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[Dlg01].q13*10000.0);
			SetDlgItemText(u_Dlg,IDC_EDIT42,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[Dlg01].q14);
			SetDlgItemText(u_Dlg,IDC_EDIT43,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[Dlg01].q15);
			SetDlgItemText(u_Dlg,IDC_EDIT44,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[Dlg01].q16);
			SetDlgItemText(u_Dlg,IDC_EDIT45,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[Dlg01].q17);
			SetDlgItemText(u_Dlg,IDC_EDIT46,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[Dlg01].q18);
			SetDlgItemText(u_Dlg,IDC_EDIT47,Dlg_name);
			sprintf(Dlg_name,"%d",fishq[Dlg01].q19);
			SetDlgItemText(u_Dlg,IDC_EDIT48,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[Dlg01].q20);
			SetDlgItemText(u_Dlg,IDC_EDIT49,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[Dlg01].q21);
			SetDlgItemText(u_Dlg,IDC_EDIT50,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[Dlg01].q22);
			SetDlgItemText(u_Dlg,IDC_EDIT51,Dlg_name);
			sprintf(Dlg_name,"%g",fishq[Dlg01].q23);
			SetDlgItemText(u_Dlg,IDC_EDIT52,Dlg_name);

			break;
		case WM_COMMAND:
			if(LOWORD(w_Param)==IDOK || LOWORD(w_Param)==IDC_BUTTON1 || LOWORD(w_Param)==IDC_BUTTON2 || LOWORD(w_Param)==IDC_BUTTON3 || LOWORD(w_Param)

==IDC_BUTTON4 || LOWORD(w_Param)==IDC_BUTTON5 || LOWORD(w_Param)==IDC_BUTTON6 || LOWORD(w_Param)==IDC_BUTTON7 || LOWORD(w_Param)==IDC_BUTTON8)
			{
			    //......
			}
			else if( LOWORD(w_Param) == IDCANCEL)//取消
			{
				EnableWindow(GetDlgItem(hWnd,1001),TRUE);
				EndDialog(u_Dlg, 0);
				return TRUE;
			}
			break;
		case WM_CLOSE:
			EnableWindow(GetDlgItem(hWnd,1001),TRUE);
			EndDialog(u_Dlg, 0);
			break;
		case WM_QUIT://退出对话框
			EnableWindow(GetDlgItem(hWnd,1001),TRUE);
			EndDialog(u_Dlg, 0);
			break;
	}
	return FALSE;
}

my question is:
if i change the win32 application to library,and use c# form to invoke libray.
first: remove the step 1,and remove the step 2,that is remove the win32 form.
second:add csharp.h to win32,and define function as below:

C++

extern "C" DLL_API  void ParaSetting(HWND _hwnd);
void ParaSetting(HWND _hwnd)
{
	CreateDialog(hInstance, MAKEINTRESOURCE(IDD_2001), _hwnd, (DLGPROC)MainuDlgProc1);
}

so i can use dllimport to invoke the win32 ParaSetting function.
but the question is : when i invoke ParaSetting function,it can't create the dialog form, because the win32 library not contains the while loop to send message.
how can i solve this quesion and achive the same function as win32 application?

Posted 18-Sep-15 17:05pm

xuyunhai

Updated 18-Sep-15 17:17pm

v6

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Comments

Sergey Alexandrovich Kryukov 19-Sep-15 2:59am

It does not seem to make any sense. What makes you thinking that sending message needs a loop?... and so on.
—SA

Richard MacCutchan 19-Sep-15 4:09am

It would be quicker just to rewrite the dialog in C#.

CPallini 19-Sep-15 8:34am

Indeed, possibly quicker, much better for sure.

1 solution

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KarstenK · Answer 1 · 2015-09-18T22:40:00

Solution 1

I must commit Richard and Sergey that your code is very unclear and hard to understand. And it would better to rewrite all in C#. It makes also debugging easier.

For interaction between C++ and C# you can take a look on my article Calling All Stations and the attached code.

Posted 18-Sep-15 22:40pm

KarstenK