小编roh*_*tvk的帖子

我有一个用c ++和chrome扩展编写的本机应用程序.

我正在使用"chrome native messaging"在它们之间进行通信.

Native-App代码:

int main(int argc, char* argv[]) {
 unsigned int a, c, i, t=0;
 std::string inp;  do {
 inp="";
 t=0;
 // Sum the first 4 chars from stdin (the length of the message passed).
  for (i = 0; i <= 3; i++) {
    t += getchar();
  }

  // Loop getchar to pull in the message until we reach the total
  //  length provided.
  for (i=0; i < t; i++) {
    c = getchar();
    inp += c; …

HBITMAP g_startcapBitmap = NULL, g_stopcapBitmap= NULL;
int nScreenWidth, ntWinx;


enum {ID_BUTTON_START=1,ID_BUTTON_STOP};  //constants for buttons
/*
 * Message loop handler for the notification window.
 */
LRESULT CALLBACK myWndProcedure(HWND hWnd, UINT Msg,
               WPARAM wParam, LPARAM lParam)
{
    PAINTSTRUCT ps;
    HDC hdc; 

    std::string json;
    switch(Msg)
    {
        case WM_CREATE:
            buttonStart = CreateWindowEx(WS_EX_TOPMOST,L"Button",L"START CAPTURE",BS_PUSHBUTTON | BS_BITMAP | WS_CHILD | WS_VISIBLE ,10,1,180,30,hWnd,(HMENU)ID_BUTTON_START,NULL,0);           
            g_startcapBitmap = (HBITMAP)::LoadImage(GetModuleHandle(NULL),
                                        //L"StartCaptureWhite.bmp",
                                      MAKEINTRESOURCE(IDB_BITMAP1),
                                       IMAGE_BITMAP,
                                       180,
                                       30,
                                       LR_DEFAULTCOLOR);
            if(g_startcapBitmap == NULL)
                LOG_INFO("loading startbitmap failed...!");
            if( ::SendMessage(buttonStart, BM_SETIMAGE, IMAGE_BITMAP, (LPARAM)g_startcapBitmap) == 0)
                LOG_INFO("sendimage for …