I'm using a book to learn the windows API using C++. This is an example from the book. But it will not compile. I've checked over the code at least 10 times now and can't seem to find any errors. Any assistance will be appreciated. Thanks in advance
Code:////////////////////////////////////////////////////////////////
//Minimal Windows Application
////////////////////////////////////////////////////////////////
#include "windows.h"
LRESULT WINAPI WindowProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE HPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
//struct WNDCLASSEX
//{
// UINT cbSize; //Size of this object in bytes
// UINT style; //Window Style
// WNDPROC lpfnWndProc; //Pointer to message processing function
// int cbClsExtra; //Extra byte after the window class
// int cbWndExtra; //Extra bytes after the window instance
// HINSTANCE hInstance; //The application instance handle
// HICON hIcon; //The application icon
// HCURSOR hCursor; //The window cursor
// HBRUSH hbrBackground; //The brush defining the background color
// LPCTSTR lpszMenuName; //A pointer to the name of the menu resource
// LPCTSTR lpszClassName; //A Pointer to the class name
// HICON hIconSm; //A small icon associated with the window
//};
WNDCLASSEX WindowClass; //create a window class object
static LPCTSTR szAppName = L"OFWin"; //Define Windows Class Name
HWND hWnd; //Window handle
MSG msg; //Window Message Structure
WindowClass.cbSize = sizeof(WNDCLASSEX); //Set structure size
//Redraw the window if size changes
WindowClass.style = CS_HREDRAW | CS_VREDRAW;
//Define the message handling function
WindowClass.lpfnWndProc = WindowProc;
WindowClass.cbClsExtra = 0; //No extra bytes after the window class
WindowClass.cbWndExtra = 0; //structure of the window instance
WindowClass.hInstance = hInstance; //Application instance handle
//Set the default application icon
WindowClass.hIcon = LoadIcon(0, IDI_APPLICATION);
//Set the window cursor to be the standard arrow
WindowClass.hCursor = LoadCursor(0, IDC_ARROW);
//Set the gray brush for the background color
WindowClass.hbrBackground = static_cast<HBRUSH>(GetStockObject(GRAY_BRUSH));
WindowClass.lpszMenuName = 0; //No menu
WindowClass.lpszClassName = szAppName; //Set class name
WindowClass.hIconSm = -0; //Default small icon
//Now Register our window class
RegisterClassEx(&WindowClass);
//Now we can create the window
hWnd = CreateWindow(
szAppName, //The window class name
L"A Basic Window the Hard Way", //The window title
WS_OVERLAPPEDWINDOW, //Window Style as overlapped
CW_USEDEFAULT, //Default screen position of upper left
CW_USEDEFAULT, //corner of our window as x,y...
CW_USEDEFAULT, //Default Window Size
CW_USEDEFAULT, //....
0, //No parent window
0, //No menu
hInstance, //Program instance handle
0 //No window creation data
);
ShowWindow(hWnd, nCmdShow); //Display the window
UpdateWindow(hWnd); //Cause the window clien area to be drawn
//The MessageLoop
while(GetMessage(&msg, 0, 0, 0) == TRUE) //Get any messages
{
TranslateMessage(&msg); //Translate the message
DispatchMessage(&msg); //Dispatch the message
}
return static_cast<int>(msg.wParam); //End, So return to windows
}
LRESULT WINAPI WindowProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
HDC hDC;
PAINTSTRUCT PaintSt;
RECT aRect;
switch(message)
{
case WM_PAINT: // Message is to redraw the window
hDC = BeginPaint(hWnd, &PaintSt); //Prepare to draw the window
//Get upper left and lower right of the client area
GetClientRect(hWnd, &aRect);
SetBkMode(hDC, TRANSPARENT); //Set text background mode
//Now draw the text in the window client area
DrawText(
hDC, //Device context handle
L"But, soft! What light through yonder window breaks?",
-1, //Indicate null terminated string
&aRect, //Rectangle in which text is to be drawn
DT_SINGLELINE| //Text format - single line
DT_CENTER| // - centered in the line
DT_VCENTER); // - line centered in the aRect
EndPaint(hWnd, &PaintSt); //Terminate window redraw operation
return 0;
case WM_DESTROY: //Window is being destroyed
PostQuitMessage(0);
return 0;
default: //Any other message - we dont
//want to know so call
//default message processing
return DefWindowProc(hWnd, message,wParam, lParam);
}
}
Quote:
1>------ Build started: Project: Windows_FirstApp, Configuration: Debug Win32 ------
1>Compiling...
1>main.cpp
1>c:\users\noah\documents\visual studio 2008\projects\windows_firstapp\windows_firstapp\main.cpp(29) : error C2440: 'initializing' : cannot convert from 'const wchar_t [6]' to 'LPCTSTR'
1> Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>c:\users\noah\documents\visual studio 2008\projects\windows_firstapp\windows_firstapp\main.cpp(75) : error C2664: 'CreateWindowExA' : cannot convert parameter 3 from 'const wchar_t [28]' to 'LPCSTR'
1> Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>c:\users\noah\documents\visual studio 2008\projects\windows_firstapp\windows_firstapp\main.cpp(114) : error C2664: 'DrawTextA' : cannot convert parameter 2 from 'const wchar_t [52]' to 'LPCSTR'
1> Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
1>Build log was saved at "file://c:\Users\Noah\Documents\Visual Studio 2008\Projects\Windows_FirstApp\Windows_FirstApp\Debug\BuildLog.htm"
1>Windows_FirstApp - 3 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
