I'm trying to create a borderless console window.
I was able to set the windowstyle to WS_POPUP, which removed the borders, but there were some glitches;
It seems that there are some parts on the console window that didn't get redrawn, or something like that, but I've tried using InvalidateRect() on the whole window, and other redrawing functions, but they don't seem to work.
Someone suggested using SetWindowPos() (with SWP_FRAMECHANGED), but that doesn't do anything either.
I have been fiddling with this probelm for a while now, and am pretty sure it has something to do with the clientarea not drawing properly (don't quote me on this)
Also the bottom glitchy part will turn black/transparent when I first scroll down and then up, but the text in my program sometimes isn't shown under it, which to my knowledge would suggest that it has no background, so it has sort of a 'chameleon' effect.
Any ideas?
I finally figured it out. (Big thanks to Maximus)
I had to use SetWindowRgn(), just like he suggested.
The final code would look something like this:
HWND hWnd = GetConsoleWindow();
RECT rcScr, rcWnd, rcClient;
GetWindowRect(hWnd, &rcWnd);
GetWindowRect(GetDesktopWindow(), &rcScr);
GetClientRect(hWnd, &rcClient);
MoveWindow(hWnd, (rcScr.right / 2) - 330, (rcScr.bottom / 2) - 180, rcWnd.right - rcWnd.left, rcWnd.bottom - rcWnd.top, 1);
SetWindowLong(hWnd, GWL_STYLE, WS_POPUP);
SetWindowRgn(hWnd, CreateRectRgn(rcClient.left + 2, rcClient.top + 2, rcClient.right + 2, rcClient.bottom + 2), TRUE);
ShowWindow(hWnd, 1);
Related
I'm working on an Windows Application which has to show an overlaying fixed positioned window ("PopUp") in the left corner of the MainFrame which will receive some Information if a user missed some input or if certain actions have been successfully.
The "PopUp" Titlebar shall have an Icon next to the Title (e.g. ->Icon<- "Error") and the standard X - Close-Button. The ClientArea will have an descriptive text of the occurred Message.
Additionally the standard Border of the PopUp shall be set to 1px(smaller than the default windows border)
The "PopUp" is derived from CWnd and created with WS_VISLBE | WS_CLIPSIBLINGS | WS_CHILD | WS_CAPTION in the OnCreate-Method of the Applications MainFrame Window
Now I need to set/shrink the default Border of my PopUp and add the Icon to the Titlebar of the PopUp.
Can someone give me some example code of how i can solve my issues?
I'm pretty new to c++ and MFC so far my research brought me to https://msdn.microsoft.com/en-us/library/windows/desktop/bb688195(v=vs.85).aspx
but i dont know where and how to use DwmExtendFrameIntoClientArea() but so far I've read I assume Dwm is the way to go to be able to solve both problems or is there another/totally different way? Am I on the right track?
Finally I was able to shrinkthe default Windows Border by overriding the handling of WM_NCCALCSIZE.
I will update this answer as soon as I solved how to put my Icon in the Titlebar.
As of now I'll explain how I shrink the windows border:
Add ON_WM_NCCALCSIZE() to your MessageMap of the desired Window and Implement OnNcCalcSize() (Class Wizard will help to set this up) as followed:
void YourCWndClass::OnNcCalcSize(BOOL bCalcValidRects, NCCALCSIZE_PARAMS* lpncsp)
{
if (bCalcValidRects){
CRect rcClient, rcWind;
GetClientRect(&rcClient);
GetWindowRect(&rcWind);
int border = (rcWind.right - rcWind.left - rcClient.right) / 2 - 1;
//-1: leaves 1px of the Windows Default Border Width erase to have no border
lpncsp->rgrc->left -= border;
lpncsp->rgrc->right += border;
lpncsp->rgrc->bottom += border;
}
CWnd::OnNcCalcSize(bCalcValidRects, lpncsp);
}
The WM_NCCALCSIZE Message is sent up on the Window Creation (when you call Create()/CreateEx() ) but at this point of time GetClientRect() and GetWindowRect() will not return the proper values therefore you need to check the Bool Parameter!!!
To trigger another WM_NCCALCSIZE to be able to work with the proper Window Rectangles call SetWindowPos() right after the window creation
if (!m_MessagePopOver->Create(NULL, NULL, WS_CHILD | WS_CLIPSIBLINGS | WS_CAPTION, rect, this, NULL, NULL)){
TRACE0("failed to create MessagePopOver");
}
m_MessagePopOver->SetWindowPos(&wndTop, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);
This will result in a window like this:
There are several ways to do this using .NET (take this for instance), yet I wasn't able to reproduce the same thing using only C++ win32.
My approach was to use WS_EX_LAYERED and then SetLayeredWindowAttributes to have some control over the opacity, but I read more and I found out that WS_EX_TRANSPARENT is 'better'- it allows click-through.
However, using
hWnd = CreateWindowEx(WS_EX_TRANSPARENT, fooName, fooName, WS_OVERLAPPEDWINDOW | WS_POPUP | WS_CLIPSIBLINGS, CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);
doesn't seem to do the trick. There is also another thing: once I get the click-through window working, can I use
PostMessage(hWnd, WM_LBUTTONUP, 0, MAKELPARAM(GET_X_LPARAM(lParam) ,GET_Y_LPARAM(lParam)));
to block the dragging state from passing through?
Note: the dragging state is produced using a touchpad device.
The click-through part:
Indeed, WS_EX_TRANSPARENT by itself is a big lie; so I used WS_EX_COMPOSITED | WS_EX_LAYERED | WS_EX_TRANSPARENT | WS_EX_TOPMOST instead.
I have control over the opacity using SetLayeredWindowAttributes(hWnd, 0, (255 * opacity) / 100, LWA_ALPHA); (quite unorthodox, but it works) and I also use
SetCapture(hWnd);
ShowCursor(false);
to grab the mouse focus as the top level window doesn't let go and hides the cursor.
I also tried to force the focus on the window adding WM_NCACTIVATE and WM_ACTIVEAPP:
case WM_MOUSEMOVE:
fprintf(stdout, "Mouse move [%d][%d]\n", GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam));
SetForegroundWindow(hWnd);
break;
case WM_LBUTTONDOWN:
printf("Mouse click\n");
SetForegroundWindow(hWnd);
break;
case WM_NCACTIVATE:
return false;
case WM_ACTIVATEAPP:
wActive = (bool)wParam;
if(wActive == false)
return 0;
else
return DefWindowProc(hWnd, message, wParam, lParam);
The dragging part:
In my particular case I wanted to 'poke' the window underneath (child window) without losing focus; unfortunately, any mouse click event will change the focus to that child window - a solution would be to:
set a timer (SetTimer, WM_TIMER) and check whether your application lost focus or not
set a hook to your window and reply to a WM_KILLFOCUS message with a WM_SETFOCUS message
I have been lately working on creating windows with transparency and click-through properties and I just tried this:
HWND hWnd = CreateWindowEx(WS_EX_LAYERED|WS_EX_TRANSPARENT, cName, wTitle, NULL, 0, 0, 640, 480, NULL, 0, GetModuleHandle(NULL), 0);
You can't close it, minimize it, drag it, etc - every click you make goes straight through as if it didn't exist.
Then just change transparency using:
SetLayeredWindowAttributes(hWnd, 0, 100, LWA_ALPHA);
It achieves everything that in your question, if I understood it correctly.
Your approach might have not worked because WS_EX_LAYERED must be defined if you use WS_EX_TRANSPARENT.
I have a custom control created using CreateWindowEx with the WS_BORDER style. Everything works fine apart from the border appearing in a different colour to other controls in the dialog box. The border in my control is black, the other controls have a blue border. I've tried calling EnableThemeDialogTexture(_dialogHandle, ETDT_ENABLE) after creating the control, as well as the logic from http://www.patchou.com/projects/richedit/ but to no avail. I'm using C++ and the Winapi. ie. no MFC, no .Net. Any guidance very much appreciated.
EDIT: Here's the logic that worked for me:
HDC hdc = GetWindowDC(hwnd);
HTHEME themeHandle = OpenThemeData(hwnd, L"Edit");
if(themeHandle)
{
int cxBorder = GetSystemMetrics(SM_CXBORDER);
int cyBorder = GetSystemMetrics(SM_CYBORDER);
RECT rc;
GetClientRect(hwnd, &rc);
OffsetRect(&rc, cxBorder, cyBorder);
ExcludeClipRect(hdc, rc.left, rc.top, rc.right, rc.bottom);
InflateRect(&rc, cxBorder, cyBorder);
DrawThemeBackground(themeHandle, hdc, 0, 0, &rc, NULL);
CloseThemeData(themeHandle);
}
ReleaseDC(hwnd, hdc);
You have to draw the border yourself, using the theme from another control (for example, the listview or treeview control). For a custom child control, drawing the border is quite easy - simply handle the WM_NCPAINT message. The part ID and state ID when you draw the border should both be 0.
My program - among other things - changes the console window appearance (mainly the window size and border).
Now on my computer, everything is working perfectly at the moment, but when I run the application in VirtualBox, or on a different computer, I get the following:
The window on the top-left corner of the image is not actually a window. It's an image of a window, that you can't click. (mouse clicks go through it)
You can get rid of it by stretching the selection rectangle on the desktop over it, or if you highlight (for example) a button that is under it. Also, you can move a window over it, which makes it disappear completely.
The black rectangle on the bottom-right corner of the image is my console window, which is displayed correctly.
My question is, how to get rid of the 'ghost' window with C++?
I tried Googling a bit, but all I could find was ChangeDisplaySettings(0, 0);, which on my computer doesn't do anything (probably because I don't even have this problem on my computer), and in VirtualBox, it first appears to momentarily make the console window fullscreen and then back to the way it was. (the screen flickers the first time you run the application)
Although it does remove the ghost window, I don't want the screen to flicker like that, so this is not what I'm looking for.
EDIT:
As I can't really figure out what would be relevant code for this problem, I'll just dump pretty much all the code that has anything to do with changing the window itself in my program.
CSBIEx.cbSize = sizeof(CONSOLE_SCREEN_BUFFER_INFOEX);
GetConsoleScreenBufferInfoEx(hCon, &CSBIEx);
CSBIEx.dwSize.X = 49;
CSBIEx.dwSize.Y = 21;
SetConsoleScreenBufferInfoEx(hCon, &CSBIEx);
srWnd.Bottom = 20;
srWnd.Left = 0;
srWnd.Right = 48;
srWnd.Top = 0;
SetConsoleWindowInfo(hCon, TRUE, &srWnd);
GetClientRect(hWnd, &rClnt);
rClnt.top += 1;
rClnt.bottom -= 2;
rClnt.right -= 1;
SetWindowLongPtr(hWnd, GWL_STYLE, WS_POPUP);
exStyle = GetWindowLongPtr(hWnd, GWL_EXSTYLE);
exStyle &= ~WS_EX_CLIENTEDGE;
SetWindowLongPtr(hWnd, GWL_EXSTYLE, exStyle);
BringWindowToTop(hWnd);
SetWindowPos(hWnd, HWND_TOPMOST, ((rScr.right / 2) - rClnt.right / 2) - 1, (rScr.bottom / 2) - rClnt.bottom / 2, 0, 0, SWP_FRAMECHANGED | SWP_DRAWFRAME | SWP_NOSIZE);
SetWindowRgn(hWnd, CreateRectRgnIndirect(&rClnt), 1);
ShowWindow(hWnd, SW_SHOWNORMAL);
//ChangeDisplaySettings(0, 0);
2ND EDIT:
I don't know if it's of any help, but I noticed that if I use ChangeDisplaySettings(NULL, 0); instead of ChangeDisplaySettings(0, 0); it doesn't do anything. That's pretty weird considering that NULL is #defined 0..
If no one can figure anything out, I'll probably just end up using ChangeDisplaySettings(0, 0);.
InvalidateRect(NULL, NULL, TRUE);
Was the thing that I was looking for.
Are you running an "Aero" theme on your computer? If so, switch to the classic theme. Betcha you will see the problem manifest itself. I think your app is not handling the WM_PAINT message properly. The Aero themes send far fewer WM_PAINT messages. The OS does the painting with bitmaps that it saves.
EDIT: Try calling these with the new dimensions:
BOOL WINAPI SetConsoleDisplayMode(
_In_ HANDLE hConsoleOutput,
_In_ DWORD dwFlags,
_Out_opt_ PCOORD lpNewScreenBufferDimensions
);
http://msdn.microsoft.com/en-us/library/windows/desktop/ms686033%28v=vs.85%29.aspx
BOOL WINAPI SetConsoleWindowInfo(
_In_ HANDLE hConsoleOutput,
_In_ BOOL bAbsolute,
_In_ const SMALL_RECT *lpConsoleWindow
);
http://msdn.microsoft.com/en-us/library/windows/desktop/ms686125%28v=vs.85%29.aspx
You can also try sending yourself a WM_PAINT message with DispatchMessage.
Im using mfc to draw a custom menu except it has a nasty looking border around it. How do i get rid of the border or draw over it?
For example:
(the white border around the edge)
Edit:
i know its only three hours left but none of the things below work. I have tried them using the following code:
HWND hwnd = m_pParent->getBrowserHWND();
uint32 style = GetWindowLong(hwnd, GWL_STYLE);
SetWindowLong(hwnd, GWL_STYLE, style&~WS_BORDER);
SetWindowPos(hwnd, 0, 0, 0, 0, 0, SWP_FRAMECHANGED);
HookHwnd hook(hwnd);
int res = TrackPopupMenu((HMENU)menu.GetHMenu(), TPM_LEFTALIGN|TPM_RIGHTBUTTON|TPM_RETURNCMD|TPM_RECURSE, xPos, yPos, 0, hwnd, NULL);
SetWindowLong(hwnd, GWL_STYLE, style);
Actually further to freefallr's advice it may well just be a simple WS_BORDER.
Try removing it using:
ModifyStyle( WS_BORDER, 0, SWP_FRAMECHANGED );
I only use WTL for UI coding, it's been years since I've looked at MFC, but it's also very close to the Windows API. You might check the creation flags for the menu.
Call GetWindowLong and specifically, check GWL_EXSTYLE for WS_EX_CLIENTEDGE; this may be the cause of your problem. You can always OR it out and call SetWindowLong and redraw the menu to test.
Hope this is of some help!
Update:
I wonder if the frame isn't being updated. Try:
ModifyStyleEx(WS_EX_CLIENTEDGE, 0, SWP_FRAMECHANGED);