I use webkitgtk to open a html page with some flash files on it. But when I load the page it crashes. My code is given below. What should I do?
GtkWidget *main_window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size(GTK_WINDOW(main_window), 800, 600);
WebKitWebView *webview = WEBKIT_WEB_VIEW(webkit_web_view_new());
webkit_web_view_set_editable(WEBKIT_WEB_VIEW(webview),TRUE);
GtkWidget *scrolledWindow = gtk_scrolled_window_new(NULL, NULL);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolledWindow),
GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
gtk_container_add(GTK_CONTAINER(scrolledWindow), GTK_WIDGET(webview));
g_signal_connect(main_window, "destroy", G_CALLBACK(destroyWindowCb), NULL);
g_signal_connect(webview, "close-web-view", G_CALLBACK(closewebviewCb), main_window);
gtk_container_add(GTK_CONTAINER(main_window), scrolledWindow);
webkit_web_view_load_uri(webview,URI_PATH);
/******************webkitsetting************************************/
WebKitWebSettings *settings1 = webkit_web_settings_new ();
g_object_set (G_OBJECT(settings1), "enable-plugins", FALSE, NULL);
webkit_web_view_set_settings (WEBKIT_WEB_VIEW(webview), settings1);
g_signal_connect (webview, "notify::load-status", G_CALLBACK (loadStatusCb),NULL);
gtk_widget_grab_focus(GTK_WIDGET(webview));
gtk_widget_show_all(main_window);`
Related
// CMFCApplication1Dlg dialog
CMFCApplication1Dlg::CMFCApplication1Dlg(CWnd* pParent /*=NULL*/)
: CDialogEx(CMFCApplication1Dlg::IDD, pParent)
{
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CMFCApplication1Dlg::DoDataExchange(CDataExchange* pDX)
{
CDialogEx::DoDataExchange(pDX);
}
BEGIN_MESSAGE_MAP(CMFCApplication1Dlg, CDialogEx)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_BUTTON1, &CMFCApplication1Dlg::OnBnClickedButton1)
END_MESSAGE_MAP()
// CMFCApplication1Dlg message handlers
BOOL CMFCApplication1Dlg::OnInitDialog()
{
CDialogEx::OnInitDialog();
// Add "About..." menu item to system menu.
// IDM_ABOUTBOX must be in the system command range.
ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
ASSERT(IDM_ABOUTBOX < 0xF000);
CMenu* pSysMenu = GetSystemMenu(FALSE);
if (pSysMenu != NULL)
{
BOOL bNameValid;
CString strAboutMenu;
bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);
ASSERT(bNameValid);
if (!strAboutMenu.IsEmpty())
{
pSysMenu->AppendMenu(MF_SEPARATOR);
pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
}
}
// Set the icon for this dialog. The framework does this automatically
// when the application's main window is not a dialog
SetIcon(m_hIcon, TRUE); // Set big icon
SetIcon(m_hIcon, FALSE); // Set small icon
// TODO: Add extra initialization here
return TRUE; // return TRUE unless you set the focus to a control
}
void CMFCApplication1Dlg::OnSysCommand(UINT nID, LPARAM lParam)
{
if ((nID & 0xFFF0) == IDM_ABOUTBOX)
{
CAboutDlg dlgAbout;
dlgAbout.DoModal();
}
else
{
CDialogEx::OnSysCommand(nID, lParam);
}
}
// If you add a minimize button to your dialog, you will need the code below
// to draw the icon. For MFC applications using the document/view model,
// this is automatically done for you by the framework.
void CMFCApplication1Dlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // device context for painting
SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);
// Center icon in client rectangle
int cxIcon = GetSystemMetrics(SM_CXICON);
int cyIcon = GetSystemMetrics(SM_CYICON);
CRect rect;
GetClientRect(&rect);
int x = (rect.Width() - cxIcon + 1) / 2;
int y = (rect.Height() - cyIcon + 1) / 2;
// Draw the icon
dc.DrawIcon(x, y, m_hIcon);
}
else
{
CDialogEx::OnPaint();
}
}
// The system calls this function to obtain the cursor to display while the user drags
// the minimized window.
HCURSOR CMFCApplication1Dlg::OnQueryDragIcon()
{
return static_cast<HCURSOR>(m_hIcon);
}
void CMFCApplication1Dlg::OnBnClickedButton1()
{
//Simulating the similar code as product
CFrameWnd *pFrame = GetParentFrame();
CMenu popup;
popup.CreatePopupMenu();
LPCWSTR pszMenuItem2 = L"Korean with wchar_t: 기존 운";
AppendMenuW(popup.m_hMenu, MF_STRING, 1, pszMenuItem2);
TCHAR* pszMenuItem3 = "|| Korean without wchar_t: 또는 차량 삽입";
AppendMenu(popup.m_hMenu, MF_STRING, 2, pszMenuItem3);
UINT nCmd = popup.TrackPopupMenu(TPM_LEFTALIGN | TPM_RIGHTBUTTON | TPM_RETURNCMD,
14, 20, pFrame, 0);
}
I have written above piece of code to generate popup menu in the screen on button click but it doesn't show any menu at all? Am I missing something?
As you asked here is the complete code. Actually I have placed one static button through GUI and on button click trying to generate the popup menu.
These button is not created dynamically. Also, the entire code here is generated by wizard except the last portion of the code about the button click.
The problem was in the handle, if I use the right API to get the handle, it shows the popup menu.
Here is the updated code.
void CMFCApplication1Dlg::OnBnClickedButton1()
{
//Simulating the similar code as product
HWND wnd= GetSafeHwnd();//<---- this had to change
CMenu popup;
popup.CreatePopupMenu();
LPCWSTR pszMenuItem2 = L"Korean with wchar_t: 기존 운";
AppendMenuW(popup.m_hMenu, MF_STRING, 1, pszMenuItem2);
TCHAR* pszMenuItem3 = "|| Korean without wchar_t: 또는 차량 삽입";
AppendMenu(popup.m_hMenu, MF_STRING, 2, pszMenuItem3);
UINT nCmd = popup.TrackPopupMenu(TPM_LEFTALIGN | TPM_RIGHTBUTTON | TPM_RETURNCMD,
14, 20, CWnd::FromHandle(wnd)/*need this api to get the CWnd from HWND*/, 0);
How can I draw an OCX (I do have the sources) to an CBitmap-Object or something alike?
Background: My client creates PDF-Documents and part of these documents is an Output from an OCX. The PDF-lib-Interface has a Method to put an Image from an CBitmap-Object to the PDF-Page.
So what i want to do ist let the Program create an CBitmap-Object, pass that to the OCX to let it draw its content onto it and then pass the he CBitmap to the PDF-library to get it into the document.
So the main question is: how to draw my ocx into a CBitmap-Object?
I'm using Visual C++, Windows, MFC/ATL.
Thanks a lot
actually I didn't manage to render the OXC to a CBitmap (just got a black box drawn) but rendering into an ATL::CImage and making a CBitmap out of it worked:
ATL::CImage* CPrnBasePrinter::DrawBeamerToImage(CSPCListView* pListViewWithBeamer, const CRect& rect4Beamer)
{
ASSERT(pListViewWithBeamer != nullptr);
auto* pRetVal = new CImage();
pRetVal->Create(rect4Beamer.Width(), rect4Beamer.Height(), 24);
HDC hdcImage = pRetVal->GetDC();
//Draw Control to CImage
pListViewWithBeamer->DrawBeamerToDC(HandleToLong(hdcImage),
rect4Beamer.left, rect4Beamer.top, rect4Beamer.right, rect4Beamer.bottom);
pRetVal->ReleaseDC();
return pRetVal;
}
void CPrnBasePrinter::DrawImageFromCImage(
const ATL::CImage* pImage, const CRect& rect) const
{
CBitmap* pbmp2Print = CBitmap::FromHandle(*pImage);
// Get the size of the bitmap
BITMAP bmpInfo;
pbmp2Print->GetBitmap(&bmpInfo);
//virtual - Draws the CBitmap to an Printer-DC or a PDF-Document
DrawImageFromLoadedBitmap(pbmp2Print, &bmpInfo, rect);
}
void CPrnBasePrinter::Draw()
{
//m_pListviewDataSource is an OCX capable of drawing itself into a given DC
ATL::CImage* pBeamerImage = DrawBeamerToImage(m_pListviewDataSource, CRect(0, 0, 100, 50));
if (pBeamerImage != nullptr){
DrawImageFromCImage(pBeamerImage, CRect(0, 0, 100, 50));
delete pBeamerImage;
}
}
Output is show in picture
I am using one CStatic control with variable as "m_background" and ID as IDC_background. In this control, the video has been run on the click of the button. and there is second control Edit Control with variable as "m_edit" and ID as IDC_edit.This Edit Box is placed over static control. I want to show the text written in Edit Control on video while we play video on click of the button with transparent background color of EDit Control.
But the problem is grey/white background has appeared for m_edit control while we play video. I want to show the text on the video with transparent background of the "m_edit" control while we play the video.
BOOL CtestcodeDlg::OnInitDialog()//To set up the video in background and text above the video
{
m_background.ModifyStyle(0, WS_CLIPSIBLINGS);
m_edit.SetWindowPos(&CWnd::wndTop, 0, 0, 0, 0,
SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE|WS_EX_TRANSPARENT);
return TRUE; // return TRUE unless you set the focus to a control
}
HBRUSH CtestcodeDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) //To transparent the background of Edit box
{
HBRUSH hbr = CDialogEx::OnCtlColor(pDC, pWnd, nCtlColor);
HBRUSH m_default=CreateSolidBrush(RGB(0,0, 0));
if(pWnd->GetDlgCtrlID() == IDC_edit)
{
pDC->SetTextColor(RGB(255,0,0));
pDC->SetBkColor(TRANSPARENT);
pDC->SetBkMode(TRANSPARENT);
}
return hbr;
}
void CtestcodeDlg::OnBnClickedButton1()////To run the video
{
my_instance = libvlc_new(0, NULL);
my_media_file = libvlc_media_new_location(my_instance,
"rtsp://BigBuckBunny_115k.mov");
my_player = libvlc_media_player_new_from_media(my_media_file);
my_event_manager = libvlc_media_player_event_manager(my_player);
libvlc_media_player_play(my_player);
libvlc_audio_set_track(my_player ,-1);
libvlc_media_player_set_hwnd(my_player, m_background);
Sleep(1000);
_beginthread(test, 0, NULL);
libvlc_audio_set_track(my_player ,-1);
}
Try using SetLayeredWindowAttributes function, with the crKey of your bk color.
Also, i think pDC->SetBkColor(TRANSPARENT); in your code is a mistake, it sets bk color to black. Try to run without this call.
Using D3D10, I am drawing a 2d rectangle and want to fill it with a texture (bitmap) that should change a few times every second (like displaying video).
I am using a shader effect, with a Texture2D variable, and trying to update a ID3D10EffectShaderResourceVariable and redraw the mesh.
My actual usage will be by copying bitmaps from memory, and using UpdateSubresource.
But it did not work, so I reduced it to test switching between two DDS images.
The result is that it draws the first image as expected, but keeps drawing it instead of switching between the two images.
I am new to D3D. Can you explain if this method can work at all, or suggest the right way to do it.
The shader effect:
Texture2D txDiffuse;
SamplerState samLinear
{
Filter = MIN_MAG_MIP_LINEAR;
AddressU = Wrap;
AddressV = Wrap;
};
struct VS_INPUT
{
float4 Pos : POSITION;
float2 Tex : TEXCOORD;
};
struct PS_INPUT
{
float4 Pos : SV_POSITION;
float2 Tex : TEXCOORD0;
};
PS_INPUT VS( VS_INPUT input )
{
PS_INPUT output = (PS_INPUT)0;
output.Pos = input.Pos;
output.Tex = input.Tex;
return output;
}
float4 PS( PS_INPUT input) : SV_Target
{
return txDiffuse.Sample( samLinear, input.Tex );
}
technique10 Render
{
pass P0
{
SetVertexShader( CompileShader( vs_4_0, VS() ) );
SetGeometryShader( NULL );
SetPixelShader( CompileShader( ps_4_0, PS() ) );
}
}
Code (skipped many parts):
ID3D10ShaderResourceView* g_pTextureRV = NULL;
ID3D10EffectShaderResourceVariable* g_pDiffuseVariable = NULL;
D3DX10CreateEffectFromResource(gInstance, MAKEINTRESOURCE(IDR_RCDATA1), NULL, NULL, NULL, "fx_4_0", dwShaderFlags, 0, device, NULL, NULL, &g_pEffect, NULL, NULL);
g_pTechnique = g_pEffect->GetTechniqueByName( "Render" );
g_pDiffuseVariable = g_pEffect->GetVariableByName( "txDiffuse" )->AsShaderResource();
// this part is called on Frame render:
device->CreateRenderTargetView( backBuffer, NULL, &rtView);
device->ClearRenderTargetView( rtView, ClearColor );
if(g_pTextureRV != NULL) {
g_pTextureRV->Release();
g_pTextureRV = NULL;
}
D3DX10CreateShaderResourceViewFromFile(device, pCurrentDDSFilePath, NULL, NULL, &g_pTextureRV, NULL );
g_pDiffuseVariable->SetResource( g_pTextureRV );
D3D10_TECHNIQUE_DESC techDesc;
g_pTechnique->GetDesc( &techDesc );
for( UINT p = 0; p < techDesc.Passes; ++p )
{
g_pTechnique->GetPassByIndex( p )->Apply( 0 );
direct2dDrawingContext->dev->Draw( 6, 0 );
}
// ... present the current back buffer
One solution, not necessarily the best, but one that doesn't use custom shaders, follows (I wrote it in C# / Managed DirectX but it should be easy to transcode.)
Bitmap bmp; //the bitmap that you will use to update the texture
Texture tex; //the texture that DirectX will render
void Render()
{
//render some stuff
bmp = GetNextTextureFrame(); //whatever you do to update your bitmap
Surface s = tex.GetSurfaceLevel(0);
Graphics g = s.GetGraphics();
//IntPtr hdc = g.GetHdc();
//BitBlt(hdc, 0, 0, bmp.Width, bmp.Height, bmpHdc, 0, 0, 0xcc0020);
g.DrawImageUnscaled(bmp, 0, 0);
g.ReleaseHdc(hdc);
s.ReleaseGraphics();
device.SetTexture(0, tex);
//now render your primitives
//render some more stuff
//present
}
The commented out lines are the way I actually did it, using an hBitmap and DC with BitBlt, because it's faster than GDI+. A lot of people will probably tell you that the above is a bad way to do it, because of all the memory locking that has to occur, and they're probably right. But I was able to achieve 30fps with multiple 1920x1080 textures, so regardless of whether it's proper, it works.
I know it can be done with OnCtlColor(), but it changes colors when the form is being loaded and the static texts are to be drawn, I want to do it after form is loaded, with a timer maybe, I searched for a solution but I didn't find a clear one, this is what I wrote:
void CTabFive::OnBnClickedButton1()
{
// TODO: Add your control notification handler code here
CWnd* pWnd = this->GetDlgItem(IDC_Chromosome1);
CDC* dc = pWnd->GetDC();
dc->SetBkColor(RGB(200,0,0));
pWnd->Invalidate();
pWnd->UpdateWindow();
Invalidate();
UpdateWindow();
//flag = true;
}
No timer is needed. Here I have a bool m_coloured member of the class initialized to false, and toggled in the button press. The OnCtlColor will draw in red or in the system colour depending on the value of m_coloured. Works nicely.
HBRUSH Cmfcvs2010Dlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
HBRUSH hbr = CDialogEx::OnCtlColor(pDC, pWnd, nCtlColor);
if (nCtlColor == CTLCOLOR_STATIC && pWnd->GetDlgCtrlID() == IDC_LABEL)
{
DWORD d = GetSysColor(COLOR_BTNFACE);
COLORREF normal = RGB(GetRValue(d), GetGValue(d), GetBValue(d));
COLORREF red = RGB(255, 0, 0);
pDC->SetBkColor(m_coloured ? red : normal);
}
return hbr;
}
void Cmfcvs2010Dlg::OnBnClickedButton1()
{
m_coloured = !m_coloured;
Invalidate();
}