List-box does not fills correctly window space in on my own coded class "splitter"
CodeGuru Home VC++ / MFC / C++ .NET / C# Visual Basic VB Forums Developer.com
Results 1 to 3 of 3

Thread: List-box does not fills correctly window space in on my own coded class "splitter"

  1. #1
    Join Date
    Oct 2012
    Posts
    3

    List-box does not fills correctly window space in on my own coded class "splitter"

    I have implemented window class (so called "splitter") and have a problem. It means - this class works fine for text-edits, buttons, normal (usual windows) - all I have tested except form list-box. List-box docks badly - it does not fills all space which it is supposed to do. Some place is not filled correctly what makes for my class troubles. How can I it solve?

    Code:
    #include "SplitterWindow.h"
    #include "stdafx.h"
    #include <wchar.h>
    
    bool InitializeSplitter(HINSTANCE hInstance);
    HWND CreateSplitterWindow(HINSTANCE hInstance, HWND hwnd1, HWND hwnd2, wchar_t title[0x100],
    	HBRUSH brush, BOOL horizontal);
    LRESULT CALLBACK SplitterWndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
    
    typedef struct _SplitterInfo
    {
    	HWND hWnd1;
    	HWND hWnd2;
    	HCURSOR hCursor;
    	BOOL	bSplitterMoving;
    	DWORD dwSplitterPos;
    	BOOL horizontal;
    	HBRUSH brush; // debug purposes
    	wchar_t title[0x100]; // debug purposes
    } SplitterInfo;
    
    bool InitializeSplitter(HINSTANCE hInstance)
    {
    	WNDCLASS	wndclass;
    
    	wndclass.style		= 0; //CS_HREDRAW | CS_VREDRAW;
    	wndclass.lpfnWndProc	= SplitterWndProc;
    	wndclass.cbClsExtra	= 0;
    	wndclass.cbWndExtra	= 0;
    	wndclass.hInstance	= hInstance;
    	wndclass.hIcon		= LoadIcon(NULL, IDI_INFORMATION);
    	wndclass.hCursor	= LoadCursor(NULL, IDC_ARROW);
    	wndclass.hbrBackground	= (HBRUSH)GetStockObject(LTGRAY_BRUSH);
    	wndclass.lpszMenuName	= NULL;
    	wndclass.lpszClassName	= L"SPLITTER";
    	if (RegisterClass(&wndclass))
    		return true;
    	else
    		return false;
    }
    
    HWND CreateSplitterWindow(HINSTANCE hInstance, HWND hwnd1, HWND hwnd2, wchar_t title[0x100],
    	HBRUSH brush, BOOL horizontal)
    {
    	HWND hwnd = CreateWindowEx(0, L"SPLITTER", L"Splitter",  
    		WS_POPUP | WS_CLIPCHILDREN, 
    				CW_USEDEFAULT, CW_USEDEFAULT, 
    				400, 300, 
    				NULL, NULL,
    				hInstance, NULL);
    	if (hwnd == NULL)
    		return NULL;
    	
    	SetParent(hwnd1, hwnd);
    	SetParent(hwnd2, hwnd);
    
    	SplitterInfo *info = (SplitterInfo *)GlobalAlloc(GPTR, sizeof(SplitterInfo));
    	info->hWnd1 = hwnd1;
    	info->hWnd2 = hwnd2;
    	info->brush = brush;
    	wcscpy(info->title, title);
    	if (horizontal)
    		info->hCursor = LoadCursor(NULL, IDC_SIZENS);
    	else
    		info->hCursor = LoadCursor(NULL, IDC_SIZEWE);
    
    	info->bSplitterMoving = FALSE;
    	info->dwSplitterPos = 300;
    	info->horizontal = horizontal;
    
    	ShowWindow(hwnd1, TRUE);
    	ShowWindow(hwnd2, TRUE);
    	UpdateWindow(hwnd1);
    	UpdateWindow(hwnd2);
    
    	SetWindowLong(hwnd, GWL_USERDATA, (LONG)info);
    	return hwnd;
    
    }
    
    LRESULT CALLBACK SplitterWndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
    {
    	HINSTANCE	hInst;
    	RECT		rect;
    
    	SplitterInfo *info = (SplitterInfo *)GetWindowLong(hWnd, GWL_USERDATA);
    
    	switch (uMsg)
    	{
    	case WM_PAINT:
    		{
    			if (info==NULL)
    				break;
    			PAINTSTRUCT ps;
    			RECT rect;
    			GetClientRect(hWnd, &rect);
    			HDC hdc = BeginPaint(hWnd, &ps);
    			FillRect(hdc, &rect, info->brush);
    			EndPaint(hWnd, &ps);
    		}
    		break;
    	case WM_CLOSE:
    
    		return 0;
    	case WM_SIZE:
    		if (info == NULL)
    			break;
    
    		if (info->horizontal)
    		{
    		/* 
    		   If window is shrunk so that splitter now lies outside the 
    		   window boundaries, move the splitter within the window.
    		*/
    		
    		if ((wParam != SIZE_MINIMIZED) && (HIWORD(lParam) < info->dwSplitterPos))
    			info->dwSplitterPos = HIWORD(lParam) - 10;
    		
    
    		/* Adjust the children's size and position */
    		
    		MoveWindow(info->hWnd1, 0, 0, LOWORD(lParam), info->dwSplitterPos - 1, TRUE);
    		MoveWindow(info->hWnd2, 0, info->dwSplitterPos+2, LOWORD(lParam) , HIWORD(lParam) - info->dwSplitterPos - 2, TRUE);
    		
    		}
    		else
    		{
    
    			if ((wParam != SIZE_MINIMIZED) && (LOWORD(lParam) < info->dwSplitterPos))
    				info->dwSplitterPos = LOWORD(lParam) - 10;
    
    			MoveWindow(info->hWnd1, 0, 0, info->dwSplitterPos - 1, HIWORD(lParam), TRUE);
    			MoveWindow(info->hWnd2, info->dwSplitterPos+2, 0, LOWORD(lParam) - info->dwSplitterPos - 2, HIWORD(lParam) , TRUE);
    		}
    		return 0;
    
    
    	case WM_MOUSEMOVE:
    		if (info == NULL)
    			break;
    		if (info->horizontal)
    		{
    			if (HIWORD(lParam) > 10) // do not allow above this mark
    			{
    				SetCursor(info->hCursor);
    				if ((wParam == MK_LBUTTON) && info->bSplitterMoving)
    				{
    					GetClientRect(hWnd, &rect);
    					if (HIWORD(lParam) > rect.bottom)
    						return 0;
    
    					info->dwSplitterPos = HIWORD(lParam);
    					SendMessage(hWnd, WM_SIZE, 0, MAKELPARAM(rect.right, rect.bottom));
    				}
    			}
    		}
    		else
    		{
    			if (LOWORD(lParam) > 10) // do not allow above this mark
    			{
    				SetCursor(info->hCursor);
    				if ((wParam == MK_LBUTTON) && info->bSplitterMoving)
    				{
    					GetClientRect(hWnd, &rect);
    					if (LOWORD(lParam) > rect.right)
    						return 0;
    
    					info->dwSplitterPos = LOWORD(lParam);
    					SendMessage(hWnd, WM_SIZE, 0, MAKELPARAM(rect.right, rect.bottom));
    				}
    			}
    		}
    		return 0;
    		/*
    	case WM_NCHITTEST:
    		{
    			wchar_t string[0x100];
    			swprintf(string, 0x100, L"(%d,%d)", LOWORD(lParam), HIWORD(lParam));
    			MessageBox(hWnd, string, L"NCHITTEST", MB_ICONINFORMATION | MB_OK);
    		}
    		break;
    		*/
    	case WM_LBUTTONDOWN:
    		if (info == NULL)
    			break;
    		SetCursor(info->hCursor);
    		info->bSplitterMoving = TRUE;
    		SetCapture(hWnd);
    		return 0;
    
    
    	case WM_LBUTTONUP:
    		if (info == NULL)
    			break;
    		ReleaseCapture();
    		info->bSplitterMoving = FALSE;
    		return 0;
    
    
    	case WM_DESTROY:
    		
    		if (info != NULL)
    		{
    			info->hCursor = NULL;
    			DestroyWindow(info->hWnd1);
    			DestroyWindow(info->hWnd2);
    			GlobalFree(info);
    			SetWindowLong(hWnd, GWL_USERDATA, NULL);
    		}
    
    		return 0;
    
    	}
    	return DefWindowProc(hWnd, uMsg, wParam, lParam);
    }

  2. #2
    Join Date
    Oct 2012
    Posts
    2

    Re: List-box does not fills correctly window space in on my own coded class "splitter

    Just create your ListBox with the LBS_NOINTEGRALHEIGHT style set.

  3. #3
    Join Date
    Oct 2012
    Posts
    3

    Re: List-box does not fills correctly window space in on my own coded class "splitter

    thanks, it works

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


Windows Mobile Development Center


Click Here to Expand Forum to Full Width

This is a CodeGuru survey question.


Featured


HTML5 Development Center