PlaySound() keeps playing my .wav after WM_DESTROY and a DrawText Issue - c

Question

I am experimenting on Windows 7 64 bit OS with win32 API.When i run my Program on debug mode my window appears but i have 2 bugs. Firt things first here is my api code modified from Charles Petzold book Ch3:
#include<Windows.h>
#include<mmsystem.h>
LRESULT CALLBACK HandleMyWindowsClassMessages(HWND WindowHandle, UINT Message, WPARAM wParam, LPARAM lParam);
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPreviousInstance, PSTR szCmdLine, int iCmdShow)
{
WNDCLASSEX MyWindowsClass;
static wchar_t szMyWindowsClassName[] = TEXT("The Name of My Window Class");
static wchar_t szAppName[] = TEXT("AppName");
HWND myWindowHandle;
MSG msg;
MyWindowsClass.hInstance = hInstance;
MyWindowsClass.style = CS_HREDRAW | CS_VREDRAW;
MyWindowsClass.lpfnWndProc = HandleMyWindowsClassMessages;
MyWindowsClass.lpszClassName = szMyWindowsClassName;
MyWindowsClass.cbSize = sizeof(WNDCLASSEX);
MyWindowsClass.cbClsExtra = 0;
MyWindowsClass.cbWndExtra = 0;
MyWindowsClass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
MyWindowsClass.hCursor = LoadCursor(NULL, IDC_ARROW);
MyWindowsClass.hIcon = LoadIcon(NULL, IDI_SHIELD);
MyWindowsClass.hIconSm = NULL;
MyWindowsClass.lpszMenuName = NULL;
if (!RegisterClassEx(&MyWindowsClass))
{
MessageBoxEx(0, TEXT("This Programm Requires WINNT!"), szMyWindowsClassName, MB_ICONERROR, 0);
return(0);
}
myWindowHandle = CreateWindowEx(
WS_EX_OVERLAPPEDWINDOW,
szMyWindowsClassName,
szAppName,
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL,
NULL,
hInstance,
NULL);
ShowWindow(myWindowHandle, iCmdShow);
UpdateWindow(myWindowHandle);
while (GetMessage(&msg, myWindowHandle, 0, 0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return(msg.wParam);
}
LRESULT CALLBACK HandleMyWindowsClassMessages(HWND WindowHandle, UINT Message, WPARAM wParam, LPARAM lParam)
{
//wchar_t szGreeting[] = TEXT("Heeeey");
HDC hdc;
PAINTSTRUCT ps;
switch (Message)
{
case WM_CREATE:
{
PlaySound(TEXT("D:\\mp3\\aywy._&_EphRem_-_Adderall.wav"), NULL, SND_FILENAME | SND_ASYNC);
return(0);
} break;
case WM_PAINT:
{
hdc = BeginPaint(WindowHandle, &ps);
DrawText(hdc, TEXT("Hello Win 7!!!"), -1, &ps.rcPaint, DT_SINGLELINE | DT_CENTER | DT_VCENTER);
//TextOut(hdc, 0, 0, szGreeting, (int)wcslen(szGreeting));
EndPaint(WindowHandle, &ps);
return(0);
}break;
case WM_DESTROY:
{
PostQuitMessage(0);
return(0);
}break;
}
return(DefWindowProc(WindowHandle, Message, wParam, lParam));
}
Bug1:PlaySound keeps playing the wav even when i have closed-destroyed the Window.When I used the original example with plain WNDCLASS the bug dissapeared!
So I must be doing something wrong using WNDCLASSEX ???.
Also in this bug to end execution of debbuging I have to press Shift+F5.
Bug2:TextOut vs DrawText
Info:I have only 1 screen.I program on my laptop.
When I use drawText and the text in my window goes out of my desktop screen borders the text just doesnt update correclty.
When I use TextOut the bug dissapears!!!
Why???
Below i have some pitures ordered to explain this.
The Program starts in debug mode
Moving the window out of Desktop borders(including the displayed text)
Moving the window back inside my desktop area(the text has been mutated)
Window is destroyed and sound will keep playing even when the wav ends.
Any help in any of the 2 bugs would be greatly appreciated.
2nd version of my WndProc:
LRESULT CALLBACK HandleMyWindowsClassMessages(HWND WindowHandle, UINT Message, WPARAM wParam, LPARAM lParam)
{
//wchar_t szGreeting[] = TEXT("Heeeey");
HDC hdc;
PAINTSTRUCT ps;
RECT rc;
rc.left = 50; rc.top = 100; rc.right = 200; rc.bottom = 200;
switch (Message)
{
case WM_CREATE:
{
PlaySound(TEXT("D:\\mp3\\aywy._&_EphRem_-_Adderall.wav"), NULL, SND_FILENAME | SND_ASYNC);
return(0);
} break;
case WM_PAINT:
{
hdc = BeginPaint(WindowHandle, &ps);
DrawText(hdc, TEXT("Hello Win 7!!!"), -1, &rc, DT_SINGLELINE | DT_CENTER | DT_VCENTER);
//TextOut(hdc, 0, 0, szGreeting, (int)wcslen(szGreeting));
EndPaint(WindowHandle, &ps);
return(0);
}break;
case WM_DESTROY:
{
PlaySound(NULL, NULL, SND_FILENAME | SND_ASYNC);
PostQuitMessage(0);
return(0);
}break;
}
return(DefWindowProc(WindowHandle, Message, wParam, lParam));
}

Answer 1

Call PlaySound( NULL, NULL, SND_FILENAME | SND_ASYNC) before PostQuitMessage to stop the sound.
About DrawText - note that BeginPaint returns rectangle rcPaint for the region which needs redraw. If you are using it for start point of DrawText, the text will appear at different places. For example - when first created, the region will start at 0,0. Then you can move another window over DrawText application window and it can require repaint from point 80,100 to lower right corner. Try with absolute (client) coordinates, e.g. define RECT rc and set rc.left = 50; rc.top = 100; rc.right = 200; rc.bottom = 200; (always the same position).