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July 25, 2019 07:02
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GetWindowText example
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#include <stdio.h> | |
#include <stdlib.h> | |
#include <windows.h> | |
#include <tchar.h> | |
LPCWSTR szWindowClass = L"MYWINDOW"; | |
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) | |
{ | |
const int size = 24; | |
BOOL res; | |
switch (message) | |
{ | |
case WM_CREATE: | |
wchar_t name[size]; | |
memset(name, 0, size); | |
res = GetWindowTextW(hWnd, name, size); | |
if (res == FALSE) wprintf(L"GetWindowTextW Error!\n"); | |
wprintf(L"%ls / %d\n", name, GetWindowTextLengthW(hWnd)); //Test Player / 11 | |
break; | |
case WM_PAINT: | |
{ | |
PAINTSTRUCT ps; | |
HDC hdc = BeginPaint(hWnd, &ps); | |
LineTo(hdc, 50, 50); | |
EndPaint(hWnd, &ps); | |
} | |
break; | |
case WM_DESTROY: | |
PostQuitMessage(0); | |
break; | |
default: | |
return DefWindowProc(hWnd, message, wParam, lParam); | |
} | |
return 0; | |
} | |
ATOM MyRegisterClass(HINSTANCE hInstance) | |
{ | |
WNDCLASSEXW wcex = { 0 }; | |
wcex.cbSize = sizeof(WNDCLASSEX); | |
wcex.style = CS_HREDRAW | CS_VREDRAW; | |
wcex.lpfnWndProc = WndProc; | |
wcex.cbClsExtra = 0; | |
wcex.cbWndExtra = 0; | |
wcex.hInstance = hInstance; | |
wcex.hIcon = LoadIcon(nullptr, IDI_APPLICATION); | |
wcex.hCursor = LoadCursor(nullptr, IDC_ARROW); | |
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1); | |
wcex.lpszClassName = szWindowClass; | |
wcex.hIconSm = LoadIcon(nullptr, IDI_APPLICATION); | |
return RegisterClassExW(&wcex); | |
} | |
int main(int argc, char **argv) | |
{ | |
HINSTANCE hInstance = GetModuleHandle(NULL); | |
ATOM atom = MyRegisterClass(hInstance); | |
HWND MainWindow = CreateWindowExW( | |
WS_EX_TOPMOST, | |
szWindowClass, | |
L"Test Player", | |
WS_POPUPWINDOW | SW_HIDE, | |
0, 0, GetSystemMetrics(SM_CXSCREEN), GetSystemMetrics(SM_CYSCREEN), | |
nullptr, nullptr, hInstance, nullptr); | |
MSG msg; | |
while (GetMessage(&msg, nullptr, 0, 0)) | |
{ | |
TranslateMessage(&msg); | |
DispatchMessage(&msg); | |
} | |
getchar(); | |
return 0; | |
} |
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