Win32 with XP theme

[Mini]

Hi!

I have sometimes problems to create windows applications which support XP themes. Somehow controls disappear if I select "Support Windows XP Themes" from the project options.

For example, if I compile the code below with XP themes, the control called "button" is not visible and I don't know why. Does anyone else know?

include <windows.h>

using namespace std;

/ Declare Windows procedure /
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);

/ Make the class name into a global variable /
char szClassName[ ] = "WindowsApp";
HWND button;
int WINAPI WinMain (HINSTANCE hThisInstance,
HINSTANCE hPrevInstance,
LPSTR lpszArgument,
int nFunsterStil)

{
HWND hwnd; / This is the handle for our window /
MSG messages; / Here messages to the application are saved /
WNDCLASSEX wincl; / Data structure for the windowclass /

/* The Window structure */
wincl.hInstance = hThisInstance;
wincl.lpszClassName = szClassName;
wincl.lpfnWndProc = WindowProcedure;      /* This function is called by windows */
wincl.style = CS_DBLCLKS;                 /* Catch double-clicks */
wincl.cbSize = sizeof (WNDCLASSEX);

/* Use default icon and mouse-pointer */
wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
wincl.lpszMenuName = NULL;                 /* No menu */
wincl.cbClsExtra = 0;                      /* No extra bytes after the window class */
wincl.cbWndExtra = 0;                      /* structure or the window instance */
/* Use Windows's default color as the background of the window */
wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;

/* Register the window class, and if it fails quit the program */
if (!RegisterClassEx (&wincl))
    return 0;

/* The class is registered, let's create the program*/
hwnd = CreateWindowEx (
       0,                   /* Extended possibilites for variation */
       szClassName,         /* Classname */
       "Windows App",       /* Title Text */
       WS_OVERLAPPEDWINDOW, /* default window */
       CW_USEDEFAULT,       /* Windows decides the position */
       CW_USEDEFAULT,       /* where the window ends up on the screen */
       544,                 /* The programs width */
       375,                 /* and height in pixels */
       HWND_DESKTOP,        /* The window is a child-window to desktop */
       NULL,                /* No menu */
       hThisInstance,       /* Program Instance handler */
       NULL                 /* No Window Creation data */
       );
button = CreateWindowEx(WS_EX_TOPMOST,"BUTTON","OK",BS_PUSHBUTTON | WS_CHILD | WS_VISIBLE ,65,65,127,95,hwnd,0,hThisInstance,0);
/* Make the window visible on the screen */
ShowWindow (hwnd, nFunsterStil);

/* Run the message loop. It will run until GetMessage() returns 0 */
while (GetMessage (&messages, NULL, 0, 0))
{
    /* Translate virtual-key messages into character messages */
    TranslateMessage(&messages);
    /* Send message to WindowProcedure */
    DispatchMessage(&messages);
}

/* The program return-value is 0 - The value that PostQuitMessage() gave */
return messages.wParam;

}

/ This function is called by the Windows function DispatchMessage() /

LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message) / handle the messages /
{
case WM_DESTROY:
PostQuitMessage (0); / send a WM_QUIT to the message queue /
break;
default: / for messages that we don't deal with /
return DefWindowProc (hwnd, message, wParam, lParam);
}

return 0;

}

[Edmund Tudor]

You can try initializing common controls, see this post:

https://sourceforge.net/forum/message.php?msg_id=2486139

I remember someone having similar problems before, I don't recall if we ever got a solution, so let us know if this helps.